SpongeBob turns 10 with 'Truth or Square'

Nickelodeon culminates the 10th anniversary celebration of pop-icon and top-rated kids' series "SpongeBob SquarePants" with the premiere of "Truth or Square," a star-studded one-hour prime-time television event airing at 8 p.m. Friday.

Celebrity guest stars Rosario Dawson, Craig Ferguson, Will Ferrell, Tina Fey, LeBron James, Pink, Triumph the Insult Comic Dog and Robin Williams appear as themselves in live-action sequences throughout the special, which follows SpongeBob and the Bikini Bottom gang as they reminisce through a series of original, never-before-seen flashbacks.

Ricky Gervais narrates the special and Cee-Lo Green (Gnarles Barkley) performs a cover of the SpongeBob theme song to an all-new stop-motion opening title sequence.

"Truth or Square" finds SpongeBob, Patrick, Squidward and Mr. Krabs accidentally locked inside the Krusty Krab's giant freezer on the day of the restaurant's big "eleventy seventh" anniversary celebration. As they crawl through the complex ventilation system trying to escape, the friends look back on shared memories.

Highlights include SpongeBob's first visit to the Krusty Krab as a baby, a vintage Krusty Krab TV commercial, how SpongeBob found his beloved pineapple house and the time that SpongeBob and Sandy got married.