I'm going to have to go with the two Ameriquest (or whatever) ads. I laughed out loud at the first one, where the guy was talking about mortgages on his cell phone saying, "You're getting robbed" and the two store employees kicked the snot out of him.
But I almost keeled over when the guy cooking dinner pulled that cat out of the tomato paste while he was chopping up dinner, and his wife walks in, and it looks like he's butchering the cat.