Wii Advanced has some really good video interviews with Nintendo reps on 4 of the games that were on display for Wii.  The videos discuss in detail how the game plays and what kinds of features will be available in the final version.  Here are the links to the videos:

Pokemon Battle Revolution

Big Brain Academy

Super Paper Mario

Super Mario Strikers Charged

There’s a lot of new info in these video interviews, so check ‘em out.