We had a thread like this on another message board I was on, and it was so funny to read through all of the responses.
I love the commercial for Mastercard that says, "life with a dog--priceless", and I also love the cell phone commercial with all of the dogs--the guy says "I ordered oxen and all I got were these little weiner dogs"
I cannot stand the verizon guy (can you hear me now)--I just cringe when he comes on, and I also cannot stand Jared from Subway--those commercials drive me nuts.
I know there's a lot more, but I'll let some others respond!!