Top 10 Viral Videos of 2008

Tina Fey impersonates Sarah Palin in a series of "Saturday Night Live" skits, including a joint appearance with Amy Poehler as Hillary Clinton, a parody of Palin's interview with Katie Couric, a spoof of the VP debate, and an appearance with Will Ferrell as Bush.

See also: Sarah Palin's cameo on SNL

An Iraqi journalist throws his shoes at President Bush at a news conference in Baghdad, in what becomes known as the "shoe heard 'round the world." The incident sparks a wave of comedy, including amusing Internet mock-ups featuring Bush ducking things like pies and snowballs, as well parodies inspired by Austin Powers and The Matrix.

Paris Hilton responds to John McCain's celebrity attack ad with her own campaign video in which she calls him wrinkly and old, and announces her own presidential campaign. Presented by Funny or Die.

Sarah Palin pardons a turkey while others are slaughtered in the background, completely oblivious to the carnage unfolding behind her.

David Letterman delivers one of the most punishing beat downs any candidate has ever received on late-night TV. "This doesn't smell right," Letterman says of McCain's decision to suspend his campaign and cancel his appearance on the show. "This is not the way a tested hero behaves. Somebody's putting something in his Metamucil."

California's battle over gay marriage takes on a musical twist in a hilarious video presented by Funny Or Die. The star-studded cast features such celebrities as John C. Reilly, Neil Patrick Harris, Margaret Cho, and Maya Rudolph, with Jack Black as Jesus.

A Canadian comedy duo prank calls Sarah Palin and convinces her she's talking to French President Nicolas Sarkozy. Palin fails to pick up on any of the hints that the conversation is a joke, even when he says, "From my 'ouse, I can see Belgium" and praises the documentary about her, Hustler's "Nailin Palin."

Amid the writer's strike, Conan O'Brien, Stephen Colbert, and Jon Stewart resort to fisticuffs to settle a hilarious mock feud over who made Mike Huckabee.

Eight years later, the guys from Budweiser's classic "Wassup" ad return to offer their take on the Bush years and the 2008 election. Presented by 60frames.

Ron Howard steps back into the roles of Opie on the Andy Griffith Show and Richie Cunningham on Happy Days as part of a call to support Barack Obama. Presented by Funny Or Die.

Though technically not from 2008, this vintage clip of Bill O'Reilly was unearthed and went viral in 2008. Watch as O'Reilly unleashes an obscenity-laced tirade during his days as host of "Inside Edition."

Watch as Sarah Palin commits a series of laughable gaffes in various interviews, including failing to think of any Supreme Court decisions, explaining how Vladimir Putin rears his head at Alaska, and getting the VP's job description wrong.