Nintendo shows footage of a new Mario platformer for Wii.
The name is Super Mario Galaxy. The footage was brief, but Mario was doing some typical looking platform things to the tune of a Wii controller. It has not yet been announced that the game would be a launch title. Only Zelda has been confirmed as a launch title so far.
Other games shown briefly include (I will describe the gameplay when names were not available): drumming, golf, symphony conducting, racing, Super Mario Galaxy, flying, Metroid Prime 3: Corruption, Wario Ware, baseball, Red Steel and Zelda.
Other notes so far are that Zelda will be available on the Wii's launch day and Metroid Prime 3 is subtitled Corruption if my ears did not deceive me. A speaker will be included in the remote portion of the controller. In an example from Zelda, the bow-string snaps on the remote and as the arrow travels the sound moves to the TV (or your stereo) speakers.
Update: Nintendo announced that 27 Wii games will be playable on the E3 show floor tomorrow.