Exclusive Video: Usher, Fergie, Justin Bieber Behind the Scenes at the AMAs

Justin Bieber, Usher, Taylor Swift, Pink and the Black Eyed Peas had big nights at Sunday's American Music Awards, and their enthusiasm was palpable before and after the show in exclusive interviews with Rolling Stone.

"I won five times tonight," Usher says after the show, actually under-counting the combination of his two wins and protégé Justin Bieber's four. "I'm super-duper gassed, happy, I couldn't ask for a better night."

Photos: Rihanna, Justin Bieber, Bon Jovi, Katy Perry and more from the 2010 American Music Awards

As Miley Cyrus, Pink, Swift, Nicki Minaj, Mike Posner, Natasha Bedingfield, Gavin Rossdale, Christina Milian, New Kids on the Block, Glee's Darren Criss and many others walk the red carpet before the show, the Band Perry's Kimberly Perry reveals who she is most excited to see perform.

"When I was 9 years old I went to my very first concert — NKOTB — so I'm excited to see them perform."