I really like the BT capability of games for versus action anywhere. Here is a list of games with this feature. Please post if you know of others.

N.O.V.A.
Harbor Master
iso Words
Red Bull Racing
Blades of Fury
F.A.S.T.
Modern Combat Sandstorm
Sea Battle
Flick Fishing
NBA Hotshot
Air Hockey (accelerato)
Mini Squadron
UNO
Flight Control