There are two of my favorites - the first "Freecreditreport.com" where he's dressed up like a pirate in a restaurant. Catchy song! I find myself singing it from time to time.
The second is, I believe a Vodka commercial, where a giant Yellow Lab comes into a backyard where they're having a BBQ, it picks up a guy in his mouth and tosses him, the guy lands somewhere, then the dog leaves. It was all so short and so fast, I laughed at it because it was so crazy!