If a commercial must interrupt the big game (new episode of How I Met Your Mother, Jersey Shore, Glee etc. etc.), then it at least ought to be entertaining and funny. Though this mentality has brought us more than a few painfully un-funny advertisements (think Geico Caveman), advertisers and YouTube have found a mutually beneficial relationship resulting in some laugh-out-loud commercials racking up major hits on the web. Though we have only scratched the surface of the millions of clips out there, here is a list of the top ten viral commercials on YouTube over the last decade or so: