My favorite games so far that work perfectly on the Touch Pro are:
Azgard Defence
Gamebox Classics
HexaVirus
PocketSlay
Sudoku
VirusChaser
Zuma
http://www.xflib.net/index.php?action=games
Xflib has a bunch of great games for free. To me, anything more complex then these are more annoying than fun to play.