I doubt we'll see as many as we did for the cube.
It's not that there aren't good games on the Wii, it's that even if a game was absolutely perfect it would still lose 5-15 points or more just for being a Wii game. See: Tiger Woods 10, Silent Hill: Shattered Memories, NSMBW.
3rd Party Wall of Shame
http://www.nintendoworldreport.com/forums/index.php?topic=30478.msg581036#msg581036