Late Night Jokes Of The Week: McCain's Rallies, Levi Johnston, Biden's J-O-B-S, And ACORN

This week in the best of late night jokes, SNL Weekend Update Thursday mocks John McCain's age, Jay Leno jokes about McCain's rallies, Conan O'Brien discusses Bristol Palin's baby-daddy Levi Johnston, Jimmy Kimmel riffs on Joe Biden's three-letter word, and Stephen Colbert jokes about the serious problems ACORN poses to America: