I really like these ads for Mercury (even though they are related to Ford, and I'd never buy a car from them):
Weatherman
A little competition

The funniest ad I've seen lately is definitely "Tuckey Junkyard" for Snapple. The first time I saw it I laughed for about a minute straight. It's mid-way down the page (Junkyard Car) on this site at AdAge.
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