Yes, I loved that Smash Brothers commercial. That was great stuff.
One of my favorites while not a video game still applies:
Nintendo Cereal I was going to post a link to the Chopper Command commercial. But after watching it, it's really not that great.
The Atari Ms. Pac-Man commercial is fun, simply because the thing ran for almost TWO YEARS back in the day. Two girls are trying to sneak into the boys' treehouse and they let it slip that they have the NEW Ms.Pac-man game.