Harrison Ford got slimed at the Nickelodeon Kids’ Choice Awards 2008 on Saturday.

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The Indiana Jones actor presented the Favourite Voice from an Animated Movie prize to Shrek the Third star Eddie Murphy before getting the green gunk dumped on him during the Los Angeles ceremony at UCLA’s Pauley

Orlando Bloom was also slimed when he and host Jack Black took their seats for the show’s record-breaking climatic finale.

Bloom joked: “It’s the whole reason I became an actor – to take part in the longest and biggest celebrity sliming in Kids’ Choice history.”

The big winner on the night was Hannah Montana star Miley Cyrus, who won Favourite Female Singer and Favourite TV Actress, and also performed her song Girls Night Out.

Cameron Diaz took home the Wannabe Award for being a good role model, and used her acceptance speech to promote environmental issues.

After collecting her gong from Ashton Kutcher, she said: “Oh wow! And when I say wow, I mean, wow! This is the biggest honour in my entire life. You’re going to change the world. Every one of you kids is the future – go out and make the world a better place.”

Pregnant Jessica Alba, dressed in a green gown, was delighted to be named Favourite Movie Actress, while Johnny Depp won Favourite Movie Actor.

Chris Brown won Favourite Male Singer, Ryan Seacrest collected the Favourite Reality TV Show award for American Idol and the Jonas Brothers were named Favourite Music Group.

The winners were voted for by Nickelodeon fans on the TV network’s website.

More than 88 million votes were cast.

Nickelodeon Kids’ Choice Awards 2008 – list of full winners:

Favourite Movie: Alvin and the Chipmunks

Favourite Animated Movie: Ratatouille

Favourite Movie Actress: Jessica Alba

Favourite Movie Actor: Johnny Depp

Favourite Voice from an Animated Movie: Eddie Murphy – Shrek the Third

Favourite Music Group: Jonas Brothers

Favourite Female Singer: Miley Cyrus

Favourite Male Singer: Chris Brown

Favourite Song: Girlfriend (Avril Lavigne)

Favourite Reality TV Show: American Idol

Favourite TV Show: Drake + Josh

Favourite TV Actress: Miley Cyrus Hannah Montana

Favourite TV Actor: Drake Bell ‘Drake + Josh’

Favourite Cartoon: Avatar: The Last Airbender

Wannabe Award: Cameron Diaz

Favourite Male Athlete: Tony Hawk

Favourite Female Athlete: Danica Patrick

Favourite Video Game: Madden NFL ’08

Favourite Book: Harry Potter series by J.K. Rowling