Sorry if these are already posted, but I haven't seen them.
Wii:
Star Wars The Force Unleashed : http://www.gametrailers.com/player/32786.html
Lost Winds (WiiWare): http://www.gametrailers.com/player/32800.html
Pop (WiiWare): http://www.gametrailers.com/player/32790.html
World of Goo: http://www.gametrailers.com/player/32801.html
Samba de Amigo: http://www.gametrailers.com/player/32788.html
Boom Blox: http://www.gametrailers.com/player/32795.html
DS:
Space Invaders Extreme: http://www.gametrailers.com/game/5830.html
Pokemon Dungeon Darkness: http://www.gametrailers.com/player/32799.html