Fall Out Boy's Save Rock and Roll has spawned a hit single and debuted at #1 on the Billboard albums chart ... so it should come as no surprise that they're already thinking of repeating the formula that led to its success on another album:

"Oh, we're going on another hiatus," Patrick Stump joked on the red carpet of KIIS FM's Wango Tango concert.

"If that could be the process, it would be amazing," Pete Wentz added. "But I'd hate to break everybody's heart and go on a break every single time ... but the process was really great."

Don't worry, Fall Out fans; with a sold-out spring tour about to kick off and a summer arena-tour already booked, it'll be a minute before the guys can even think of taking another extended break (they're also still attempting to film a video for every song on the new album, too). And, though they're too busy to begin thinking of what will come next, they have learned one thing from making Save Rock and Roll: namely, they're not the same band they were during their heady, mid-aughts heyday.

"It's crazy, because we almost had to start from scratch," Stump explained. "It feels more like a new band than an old band getting back in the swing of things; it's awesome."

Then again, no matter how much they've changed — and in spite of the success they've experience with their comeback — there is one thing that has remained the same: Fall Out Boy still suffer from chronically low self-esteem ... which, come ...

Lovatics, get ready! Not only is Demi Lovato releasing her new album, Demi, on Tuesday, but she will also sit down for a 30-minute "Live From MTV" live stream on MTV.com and MTV Hits, where she will take questions from her fans and reveal the inspiration behind her new album.

Lovato will hang out with MTV News as well as a group of her biggest fans for an exclusive interview at 3 p.m. ET on Tuesday. Have any questions for Demi? Join the conversation by tweeting @MTVBuzzworthy using the hashtag #AskDemi.

Last week, Lovato's fans were able to listen to all 13 songs off the pop star's new album — a mix of ballads and girl-power anthems, including the track, "Really Don't Care" with former "X Factor" U.K. contestant Cher Lloyd.

Demi later took to Twitter to thank her fans for the support on her new musical effort, "So many incredible fans... Thank you SO much... I'm so thankful for each and every one of you. I love you all!!"

What's Your Favorite Demi Song? Vote Here!

Demi is the former Disney star's fourth studio album and already has produced the lead single, "Heart Attack." Earlier this year, "The X Factor" judge gave MTV News a taste of the album's similarities with 2011's Unbroken.

"Well, not only does the album say a lot about where I am in life right now [but] like there's follow-up songs," she teased. "I feel like one is a follow-up song to 'Skyscraper.' I feel like other ones talk about some issues I haven't spoken ...

Lovatics, get ready! Not only is Demi Lovato releasing her new album, Demi, on Tuesday, but she will also sit down for a 30-minute "Live From MTV" live stream on MTV.com and MTV Hits, where she will take questions from her fans and reveal the inspiration behind her new album.

Lovato will hang out with MTV News as well as a group of her biggest fans for an exclusive interview at 3 p.m. ET on Tuesday. Have any questions for Demi? Join the conversation by tweeting @MTVBuzzworthy using the hashtag #AskDemi.

Last week, Lovato's fans were able to listen to all 13 songs off the pop star's new album — a mix of ballads and girl-power anthems, including the track, "Really Don't Care" with former "X Factor" U.K. contestant Cher Lloyd.

Demi later took to Twitter to thank her fans for the support on her new musical effort, "So many incredible fans... Thank you SO much... I'm so thankful for each and every one of you. I love you all!!"

What's Your Favorite Demi Song? Vote Here!

Demi is the former Disney star's fourth studio album and already has produced the lead single, "Heart Attack." Earlier this year, "The X Factor" judge gave MTV News a taste of the album's similarities with 2011's Unbroken.

"Well, not only does the album say a lot about where I am in life right now [but] like there's follow-up songs," she teased. "I feel like one is a follow-up song to 'Skyscraper.' I feel like other ones talk about some issues I haven't spoken ...

Is there really a better way to celebrate 20 years in the industry than with a summer tour? Well, that's how Backstreet Boys plan on celebrating. The recently reunited fivesome will kick off their "In a World Like This" jaunt on August 2 in Chicago.

"Backstreet Boys are going on tour this summer," Nick Carter said, via Ryan Seacrest's website. "That's right, baby! All five of us are back together. It's our 20th anniversary tour. We've got a brand-new album coming out."

And they're bringing some friends along for the ride. They've enlisted the help of "Jersey Shore" star DJ Pauly D and Jesse McCartney to open for them. The tour will make stops all across the country, including Las Vegas, Charlotte, Atlanta and more, before wrapping up on September 8 in San Francisco before they launch into a handful of dates in Japan. Tickets go on sale on Friday, May 17.

Ryan Gosling And The Backstreet Boys: What Could Have Been...

Lately, BSB have been working on a new album. It's the first in nearly seven years that includes all five members of the group after Kevin Richardson re-joined the boy band last year.

"It doesn't sound like 'The Call' or it doesn't sound like the Millennium album," Richardson told MTV News late last year about the release. "But it's fresh, it's new, we are trying to find where we are now sonically, and we are experimenting. It's really exciting."

BSB's In a World Like This tour dates are as follows: »8/2 -- Chicago, IL @ Chicago ...

It's safe to say blockbuster season is in full swing when a $50 million debut isn't enough to be #1 at the box-office.

beat industry expectations with a super strong $51.1 million opening over the weekend, which would have been enough for the top spot were it not for a certain Marvel Comics superhero. held onto the #1 position for a second consecutive weekend with a $72.5 million domestic total, the fourth biggest second weekend in history after "The Avengers," "Avatar" and "The Dark Knight."

Downey's third solo outing as the armored Avenger has now made $289.4 million domestically and more than $664 million internationally for an overall total of $949 million. $95.3 million was collected in China, where audiences were treated to exclusive Chinese specific sequence. "Iron Man 3" is huge in South Korea and is now the highest-grossing film ever in Malaysia and Indonesia. It should join the elite club of movies to have cracked $1 billion before this week is over.

"The Great Gatsby" enjoyed the third biggest opening ever for a film that was blocked from making it to #1; "Iron Man 3" did the same thing to Baz Luhrmann's take on the F. Scott Fitzgerald classic as "Shrek 2" managed to do with "The Day After Tomorrow" in 2004 and "Avatar" did with Downey's "Sherlock Holmes" in 2009. It was the second biggest opening for Leonardo DiCaprio (behind "Inception") and will soon overtake "Moulin Rouge" as Luhrmann's highest grossing film ever.

Mark Wahlberg and Dwayne "The Rock" Johnson's "Pain & Gain" came in third ...

There are certain things you want from the Bluths: stair cars, bad magic, blinged out hook hands and potential cousin-on-cousin action. That's why the 90-second trailer for the upcoming reboot season of 
 is almost perfect.

The cult comedy is coming back on May 26 in a 15-episode all-at-once season on Netflix that brings us up to speed on what the key family members have been up to since we last saw them. And fans of the low-rated, but beloved original series will have plenty to love in the snapshots of the Bluths being, well, the Bluths.

A few highlights:
» The "sane one," Michael, opens the trailer at Phoenix's Sky Harbor airport, where he arrives in search of a new place to live, only to burn his hand on the super-heated door handle of a waiting taxi. He gets an unwelcome surprise in the next scene, when he pops in to visit son George Michael in his college dorm room ... where the freshman appears to be shacked up with his favorite cousin, Maebe.

» In a quick-cut montage we get re-introduced to the whole insane gang: Michael, Gob, Lindsay, George Michael, Lucille, Tobias Funke, George, Maebe and Buster, who is, of course, freaking out about something.

» The world's most confounding couple share a tender moment, when blonde beauty Lindsay tells sexually ambiguous Tobias, "I really love you," and he responds, "Oh, Lindsey, we've got to get you to that acting class."

» Family patriarch George telling someone over the phone, "I just want my son to have a ...

In classic fashion, the much-hyped Justin Bieber cameo on Sunday night's episode of "The Simpsons" was essentially a throw-away joke that you might have missed it if wasn't for an on-screen warning.

Bieber popped in briefly during an episode entitled in which Bart pretends to be a keyboard prodigy because he is smitten by his sexy Russian piano teacher.

"First of all, you're over 10 years old, second, you're clearly Justin Bieber," says the security guard at the entrance to the 10-And-Below talent show. An incredulous Bieber, wearing a Versace leather jacket and gray T-shirt, throws up his hands and says, "That's another 25 bucks we'll never see! Gosh!" Standing right behind him in a white hoodie, blue sport coat and NY baseball cap is manager Scooter Braun, who did not get a line in the bit.

After Bieber stomps off, the scene changes and the words, "All clear — The Simpsons will be Bieber-free from this point on." Just before his appearance, a similar warning popped up, "Thirty seconds to Justin Bieber, you may start or stop watching according to your beliefs."

Like Lady Gaga in 2011,
 Bieber played himself in the episode.

With the bucket list check off, Bieber joins a long, and illustrious list of famous musicians who've swung by Springfield (either as themselves or characters), including: three Beatles, the Rolling Stones, Katy Perry, Smashing Pumpkins, Cypress Hill, U2, Fall Out Boy, Red Hot Chili Peppers, the Ramones, the White Stripes, R.E.M., Michael Jackson, Metallica, Britney Spears, 50 Cent and Coldplay's Chris Martin.