Taylor Swift, Selena Gomez, Robert Pattinson Dominate 2011 Teen Choice Awards

Host Kaley Cuoco brings laughs to surfboard-fest.

The Teen Choice Awards returned on Sunday (August 7) to hand out brightly colored surfboards for everything from best summer jam to favorite on-screen kiss. Introduced by the ladies of the Kardashian clan, the evening's DJ, Black Eyed Peas impresario will.i.am, kicked off the show in a dark coat and his signature angular hair helmet to drop a fist-pumping jam. Teen Choice host and "Big Bang Theory" star Kaley Cuoco hit the stage with a high-energy opening monologue in high-shine skinny trousers, getting all up close and personal with some of the "typical" teens in the audience, like MTV's "Teen Wolf" heartthrob Tyler Posey.

Decked out in appropriately scruffy beachside chic, Ashton Kutcher nabbed the first surfboard of the night for Choice Movie Actor, Romantic Comedy, for his bedroom-buddy rom-com, "No Strings Attached." After insisting teens skip credit card drama by only charging things they can afford — a dig at the nation's credit drama — the newly minted "Two and a Half Men" star led the crowd through an a cappella sing-along of Katy Perry's "Teenage Dream." When funnywoman Ellen DeGeneres scored the Choice Comedian award directly after Kutcher, she jokingly pretended to croon "Stairway to Heaven," after reassuring young people that it's "never too late" to be a teen choice.

Check out the hottest of young Hollywood on the Teen Choice 2011 red carpet.

Other winners included were closer to the Teen Choice demographic, including "The Twilight Saga: Eclipse" hunk Taylor Lautner for Choice Movie Actor Sci-Fi/Fantasy, Blake Lively for Choice TV Actress Drama and Kellan Lutz and Ashley Greene for Choice Movie Scene Stealers, who both snagged the award for the second consecutive year.

With five Choice surfboards under her belt, [artist id="3079282"]Selena Gomez[/artist] and her band the Scene worked her Choice Love Song-winning hit "Love You Like a Love Song." Rocking a leg-baring gown, the "Wizards of Waverly Place" actress added some throwback glam to her look with a veiled headpiece as she belted the breakout ballad. Gomez' superstar boyfriend, [artist id="3187077"]Justin Bieber,[/artist] and fellow Disney alumna [artist id="3079280"]Demi Lovato[/artist] enthusiastically bopped along in the audience.

Ed Helms took home the surfboard for Choice Hissy Fit for reprising his role as a hilariously frazzled pal in "The Hangover 2." "The Office" actor thanked kids for buying a ticket for "Kung Fu Panda 2" and sneaking into the Thailand-based raunch-fest instead.

The cast of "Glee" racked up a bunch of wins, including Choice TV Comedy, Choice TV Actor Comedy for Cory Monteith and Choice TV Breakout Star for Darren Criss. After the boatload of wins, the stars introduced a clip of "Glee 3D: The Concert Movie," which hits theaters on Friday. Choice TV Reality Show went to "Jersey Shore" and the show's well-coiffed ladies' man DJ Pauly D scored Choice Male Reality Star.

Hollywood It girl Emma Stone presented [artist id="2389485"]Taylor Swift[/artist] with the board for Ultimate Choice, rattling off a list of the country superstar's teenage accomplishments, from landing publishing and record deals to notching #1 hits. Following a behind-the-scenes look at her adventures on the road and heartfelt Twitter missives from fans giving snaps to her style and role-model status, the 21-year-old music sweetheart noted it's been a whole "two years" since she was a teen, and she encouraged fans not to lose their youthful passion. It was an eventful night for the TCA newbie, as she scored five other awards, including Choice Female Artist.

[artist id="2973647"]Jason Derülo[/artist] lit up the stage with his Robin S.-sampling single "Don't Wanna Go Home." Sporting a leather jacket and slim trousers, the pop hitmaker punctuated his Future History lead single with slick pop-locking and athletic handstands.

The night brought some inspirational moments as well. Demi Lovato received the Acuvue Inspire Award for passing up the limelight to tackle personal demons head on and launching the Love is Louder Than the Pressure to Be Perfect movement to help troubled young people. Rocking a lemon-hued gown, the starlet took the stage to a standing ovation and credited fans for her recovery, insisting, "You guys are what got me through, I love you so much."

Sean Kingston also scored a standing ovation when he made his first awards show appearance since his life-threatening accident earlier this year, looking healthy and happy. The "Fire Burning" chart-topper then presented the Choice Male Artist award to fellow pop pal Justin Bieber. The teen megastar — who also nabbed a slew of awards like Choice Male Hottie and Choice TV Villain — kept up the evening's positive vibe, reflecting on his rise from typical Canadian teen to game-changing pop sensation, reminding the audience that "anything is possible." Fellow heartbreaker Robert Pattinson used his acceptance speech for Choice Vampire to raise awareness about blood cancers in conjunction with the Cancer Bites campaign (Pattinson also won the Choice Movie Actor Drama prize for "Water for Elephants").

The evening wrapped up with a tribute to the record-setting "Harry Potter" film franchise, with the final film of the series picking up honors such as Choice Summer Movie. Rupert Grint told fans that being a part of the "Potter" juggernaut "changed our lives," and Choice Movie Villain Tom Felton thanked fans "for making the journey with us." Even though he was tied up on Broadway performing in "How to Succeed in Business Without Really Trying," Choice Summer Movie Star winner Daniel Radcliffe accepted his surfboard via satellite from New York, and thanked his legions of fans for a "fantastic" 10 years.

What was your favorite moment from the 2011 Teen Choice Awards? Let us know in the comments!