Funny Moments from the 2008 Campaign Trail

Joe Biden delivered the evening's best line at the Democratic debate in Philadelphia, saying, "Rudy Giuliani. There's only three things he mentions in a sentence -- a noun, a verb, and 9/11."

Read complete details about Stephen Colbert's presidential bid, plus watch video clips of Colbert announcing his candidacy on "The Daily Show" and "The Colbert Report."

During an appearance on "The Tonight Show with Jay Leno," Barack Obama joked about being related to Dick Cheney ("I don't want to be invited to the family hunting party") and Hillary Clinton's premature coronation ("Hillary is not the first politician in Washington to declare 'Mission Accomplished' a little too soon."

Watch the five funniest video clips, check out a highlight reel featuring closed captions for liberals, read the night's best quips, and find out what Chuck Norris was doing there

After being asked by a high school student if he was too old to be president, Sen. John McCain cracked up the audience when he quipped, "Thanks for the question, you little jerk."

Sen. Hillary Clinton joked about her pantsuits during an appearance on the "Late Show with David Letterman."

Watch Ted Kennedy confuse Barack Obama with Osama bin Laden in this embarrassing video clip.

As former New York Mayor Rudy Giuliani began to answer a difficult question about his position on abortion during a Republican presidential debate, lightning struck from above.

Watch a series of funny campaign ads featuring Democratic presidential candidate Bill Richardson at a job interview for President of the United States.

Hillary Clinton drew laughter at a recent fundraiser when she likened Dick Cheney to Darth Vader. "You can always tell when the Republicans are getting restless, because the Vice President's motorcade pulls into the Capitol, and Darth Vader emerges," Clinton quipped.