Toronto — Paul Giamatti is not an idiot. Anyone who has seen the Academy Award nominee acting can attest to that, but when it comes to talking about his role in "The Amazing Spider-Man 2," he has found himself in a complicated position.

Take, for example, when he sat down with MTV News' Josh Horowitz at the Toronto International Film Festival, where Giamatti is promoting the new JFK assassination drama "Parkland." He could reveal to MTV News that his role as the Rhino in the upcoming "Spider-Man" sequel — as it has been hinted elsewhere — is more of a stage-setting opening sequence.

"And I believe there's a lot of stage-setting for the next film. There are several villains in this movie, and some of them are more foreground and important. Jamie Foxx is and stuff," he said. "A couple of us are more hanging around the background because I think there will be a bigger deal."

For anyone closely following the trajectory of the Sony's rebooted "Amazing Spider-Man" series, that "bigger deal" shouldn't be anything new. It sounded to be a reference to the formation of the Sinister Six, a group compromised of some of Peter Parker's most notorious foes, a team that originally included Sandman, Doctor Octopus, Kraven the Hunter, Mysterio, Vulture, and the villain in "Amazing Spider-Man 2," Electro.

But would Giamatti go as far as to confirm the Sinister Six as the "bigger deal"? Not so fast.

"I don't actually know, but that seems to be what they're doing," he said. "I'm not an idiot either, but I can't ...

Toronto — As excited as most people were to hear that James Spader had been cast as the big bad guy in "Avengers: Age of Ultron," there was also a bittersweet aspect to the announcement. It symbolically ended the reign of Loki and Tom Hiddleston as the series' main villain.

Speaking with Hiddleston at the Toronto International Film Festival, MTV News' Josh Horowitz asked the former "Avengers" nemesis what he thinks of the new casting. Always the class act, he was ecstatic. "I love it," he said. "Absolutely love it."

"I always knew [Joss Whedon] would make a good choice," Hiddleston continued. "James Spader I've been a fan of for as long as I can remember. I saw him in 'Lincoln,' and it felt like I haven't seen James Spader for a while. I thought he was wonderful in it."

Hiddleston, better than any other person on the face of the Earth, knows what it takes to go toe-to-toe with the Avengers and live to talk about it, so his endorsement of Spader certainly bodes well. "I think he'll be able to play very interesting tennis with Robert Downey Jr. and Mark Ruffalo," he said. "I'd say don't try to belittle the Hulk in any way."

And even though fans are already preparing to leave Loki behind as an Avengers villain, we're not quite done with the god of mischief just yet. He'll appear alongside his adopted brother, Thor, in the god of thunder's upcoming sequel "The Dark World," which could be the last time we see Loki. If that's the case, Hiddleston ...

In her new video, Ariana Grande takes fans for a ride on the Express down Nostalgia Road. The clip, which officially dropped on Friday, follows the Yours Truly singer as she and her pals chill out on a bus, on a roof, in the street and at a house party, always dancing and laughing — putting out a major homage to the '90s.

So, when Grande told MTV News back in July that the video would have "lots of color. And lots of... baggy clothes. It'll make you smile," she wasn't lying. Those are only some of the elements that throw back to the '90s — here are the other nostalgic moments from the colorful clip:

Kickin' Old-School (Electronics)
In 2013, almost no one uses a payphone, unless you're Adam Levine in that Maroon 5 song, but still, that form of on-the-go communication makes an appearance in the clip. The boom box also makes an appearance in the clip. Grande may have been born in the '90s (1993, to be exact), but she certainly still has an appreciation for some of the decade's most-used electronics.

She Could Be a Farmer...
During the video, Grande sports some white overalls. Overalls became a staple in '90s closets, and a pair like Grande's were immortalized by fashion victim-turned-fashionista, Tai, during a party scene in the 1995 classic, "Clueless."

Check out Ariana's '90s Throwback Moments Here!

Mariah, You're On Fire
The MC comparisons won't end with the release of this video. There are several moments pulled from the legendary vocalist. For instance, the scene where Grande rides ...

Demi Lovato kissed a girl, and she liked it — or at least her did.

Last month, Naya Rivera Rivera confirmed to MTV News that Lovato would be playing her Dani, one of Lea Michele's pals in NYC who gets a crush on her character, Santana. And now the "X Factor" judge is opening up about what it's like to play a gay character on the small screen.

"Well I took a meeting so before I even booked the role. I knew what the role was going to be, and [Naya Rivera and I] had an awesome time working together," Lovato told MTV News. "She's such a badass; I love her. And I've been friends with a lot of the people from the cast beforehand, so I feel right at home."

While Lovato isn't new to acting, playing a member of the LGBT community offered up a unique challenge for the former Disney star and multi-hyphenate performer. She added, "Figuring out how to represent that community... it's been pretty awesome to represent that on primetime TV."

Lovato will reportedly be on the show for a multi-episode arc, beginning in one of the first two episodes airing September 26. And when MTV News caught up with Rivera on the red carpet of the 2013 Video Music Awards, she seemed just as excited as Lovato.

"I mean, she's playing my love interest, so I'm very, very excited about that," Rivera said. "We get to sing a song together. It's gonna be good. I'm excited to work with her. We're bringing her to the ...

Ariana Grande is throwing a '90s block party, and you're invited!

On Friday (September 6), the former Nickelodeon star released the fun and flirty video for that takes a page straight out of the '90s, from the overalls to the graphic T's and mismatched prints. All they missed were the snap bracelets!

The video follows Grande and her crew shutting down the block as she rocks a pair of short shorts and a midriff-baring top, reminiscent of Mariah Carey's ensemble in the 1995 "Fantasy" video.

Grande, who promised the clip would make her fans smile, tosses her signature locks and sings sweetly to the camera as she takes her party from the streets to the rooftop to the bus. Eventually, Grande trades in the short shorts for overalls and the sky-high heels for sneakers, as she shows off her adorable running man moves flanked by her back-up dancers. Eventually Grande makes her way back to the house party, which is complete with inflatable microphones and boom boxes.

"Baby I" is the latest single off Yours Truly, which was released this week, and follows her massive hit and featuring The Wanted's Nathan Sykes.

Even though she was only born in 1993, Grande has made it no secret that she's been channeling '90s R&B on her album, and on "Baby I" in particular.

"I love that. It felt like '90s, Aaliyah, Destiny's Child. I like that it has that throwback feeling to it," she told MTV News in July about the track. "And that's when I grew up ...

Katy Perry may reign as Queen of the Jungle in her new video, but according to directors Grady Hall and Mark Kudsi, she was more than willing to step down off the throne ... almost too willing.

"She was game for anything. We'd say to her 'Alright what about tarantulas?' and she'd perk up, say 'Hey I can put one on my face!'" Hall laughed. "The vine swinging, getting up there in the trees, standing on top of a water fall, there was no hesitation."

"It was amazing, she jumped at the opportunities and loved it," Kudsi added. "It was great; after the first time we threw out some ideas to her, we got a sense she was game and we tried to up it, and there wasn't one thing she said 'No' to."

And for the directors, both members of the Motion Theory collective, that made "Roar" extra challenging ... they knew their star was willing to push the boundaries, which meant they had to go as big as possible. Beginning with the video's singular concept.

"It was simple; we started with the idea of 'Katy Perry: Queen of the Jungle,' and that just lit a fire," Hall said. "From that first sentence everyone was like 'Of course!' And then we went from there, thinking of things like 'What's the biggest way to roar? We started using words like 'Glamazon.' We sort of invented our own language for it."

"We jumped in to older pulp-type movies, like 'Sheena, Queen of the Jungle,' Bettie Page pinups, but at the same ...

It's a big week for the Katy Cats. In addition to unleashing her video for "Roar" on Thursday, Katy Perry revealed her lo-fi album cover for Prism on Friday (September 6).

And whereas she's opted for high-concept covers in the past, the Prism image is of just Perry's face, wearing little to no makeup, standing in the glow of the sun.

One fan, Marie from Connecticut, told MTV News about the image for the October 22 release, "I absolutely love that about her. It's like finally she's like unlayering herself and showing us more sides of her and I really love the no makeup thing because, honestly, it's extremely beautiful."

"I liked it compared to the ['Roar'] video," Chris from New York added. "It's not as like colorful and vibrant, but it relates to the concept of Prism and letting light in and she's gonna burst it out on all her fans."

It's a major change in tone for the colorful "Roar" singer. For 2010's Teenage Dream cover, Perry opted for candy chic, appearing naked covered up by cotton-candy pink clouds. And for her previous effort, 2008's One Of The Boys, Katy paid homage to vintage pin-up girls while lounging in a garden and listening to some old records.

"I loved it so much because I don't know, it was just very different from like Teenage Dream when she's just posing like at the camera," Marie added. "I think it's so beautiful and really different and she works it."

This time, it's just Katy, and she's not playing ...

If Hugh Jackman's tenure as Wolverine is coming to a close, then the actor is making sure he goes out with a bang. Next summer, Jackman will follow up 2013's "The Wolverine" with "X-Men: Days of Future Past" — a film that reunites the star with director Bryan Singer and the rest of the original X-Cast, including Patrick Stewart, Ian McKellen, Halle Berry and Anna Paquin.

The film marks Jackman's fifth outing as the hirsute hero — sixth if you count his memorable three-word cameo in 2011's "X-Men: First Class" — and the fact that this new film could be Wolverine's swansong was not lost on the actor.

"It may be the last," Jackman told MTV News' Josh Horowitz while promoting "Prisoners" at the Toronto International Film Festival. "By the way, it didn't hit me until three weeks before the end [of shooting 'X-Men: Days of Future Past], because we promoted 'The Wolverine' and I came back on set with three weeks to go, and that's when I went, 'Well, who knows? Maybe there's no more Wolverine. Maybe this is it. Who knows? Maybe.' So I really made the most of those last few weeks. I enjoyed every time I put the claws on."

This film also marks the quickest turnaround Jackman has made between X-films. With "The Wolverine" and "X-Men: Days of Future Past" coming right on top of each other, Jackman promised that the events of 2013's solo film will have ramifications for the next big X-Men epic.

"Definitely. Even more, I think, than in 'X-Men 3,' where he was reluctantly ...