simple old school games like simcity2000, or simant. or lemmings. man i had fun with those. doom wouldnt go astray either.
maybe in the near future when the processor allows for it....emulators to run n64 super smash bros . with networking ability to play against other players on a network lol...
or ping pong that uses the motion sensor in it to detect what way to move the block doovie..? (any1 know that game??)