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OTRC: Justin Bieber, Katy Perry win at Kids' Choice Awards - See winners' list and find out who got slimed

The 24th Annual Kids' Choice Awards took place on Saturday, April 2, 2011 and while many stars walked away with nickelodeon-colored blimp awards, more walked away covered in green slime.

Stars like Johnny Depp, Heidi Klum, Rosario Dawson, Willow and Jaden Smith, The Black Eyed Peas, and Josh Duhamel all appeared at the ceremony.

After earning the blimp-shaped favorite movie actor trophy for his Mad Hatter role in "Alice in Wonderland," Depp hosed waves of green goop on the screaming crowd of more than 10,000 kids - and a few adults, according to the Associated Press.

Jack Black served as the zany master of ceremonies. He kicked off the show by arriving in a monster truck, performing a flash mob-style routine on the orange carpet, then dancing alongside the Black Eyed Peas, who crooned a medley of their tunes while sporting outfits made of colorful blocks.

Several celebrities received the annual sliming, where they were doused in green goop, a tradition at the awards ceremony. Heidi Klum was blasted with goop from an envelope. "Glee" star Jane Lynch gave a slime slushie to Jason Segel and Snoop Dogg was doused after performing with boy band Big Time Rush. Josh Duhamel, who dressed up as an absentee Bieber, was inducted into the Arm Fart Hall of Fame and crowned in a slime throne.

Justin Timberlake was awarded the show's silver Big Help trophy for his environmental and charitable work. He encouraged the audience to stand and scream if they've ever been helpful in their lives and encouraged children to listen to their parents.

Past winners of the humanitarian honor have included Leonardo DiCaprio and first lady Michelle Obama.

Check out the full list of winners from the 24th annual Kids' Choice Awards.

Favorite Movie: "The Karate Kid"
Favorite Movie Actor: Johnny Depp, "Alice in Wonderland"
Favorite Movie Actress: Miley Cyrus, "The Last Song"
Favorite Animated Movie: "Despicable Me."
Favorite Voice from an Animated Movie: Eddie Murphy, "Shrek Forever After"
Favorite Butt-kicker: Jackie Chan, "The Karate Kid"
Favorite TV Show: "iCarly"
Favorite TV Actor: Dylan Sprouse, "The Suite Life on Deck"
Favorite TV Actress: Selena Gomez, "Wizards of Waverly Place"
Favorite TV Sidekick: Jennette McCurdy, "iCarly"
Favorite Reality Show: "American Idol"
Favorite Cartoon: "SpongeBob SquarePants"
Favorite Music Group: Black Eyed Peas
Favorite Female Singer: Katy Perry
Favorite Male Singer: Justin Bieber
Favorite Song: Justin Bieber, "Baby"
Favorite Male Athlete: Shaquille O'Neal
Favorite Female Athlete: Lindsey Vonn
Favorite Book: "Diary of a Wimpy Kid" series
Favorite Video Game: "Just Dance 2"
The Big Help Award: Justin Timberlake

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