There have been some pretty funny credit card commercials. One of my all time favorites was in the mid to late 90s where Jerry Seinfeld was pumping gas and is trying to achieve the perfect pump. The perfect pump is filling your tank until it is pretty full and then stopping on a 0. For instance you are pumping and then you stop on $20.00 would be considered a perfect pump.
Anyways the premise of the commercial; Jerry is pumping and he achieves the perfect pump, but when he removes the nozzle he accidentally pumps a little bit of gas and losses the perfect pump. All is not lost though since he pays with his American Express he doesn't have to worry about the change.
Another commercial I liked was the Capital One, What's in Your Wallet. Recently I saw a Capital One Card Lab commercial. The commercial is decent in my opinion, but it doesn't really have the stand out factor that really catches your attention.