I wished for vigilante to be available on the xbox marketplace. What I found was an unplayable mess with chunky, early windows flight sim graphics. I stil have most of the stuff I like to play on carts.
Gauntlet and SmashTV worked out really well, and I've had several hours of fun with both. The older games seem to handle the transition better.
Cyberball could be fun. Metal Slug is already on the Wii. Zaxxon, would be something I'd play. One of those games where the player competes against a high score.