I've played a decent number of fun games on -my- touchpad, to name a few:
plants vs zombies
modern combat 2
sim city hd
tons of snes games (I finished several jap rpgs I never got around to on my touchpad, like tales of phatasia and dragon quest v, all translated and fun with a bluetooth wii controller)
all of those games and TONS more work beautifully on the touchpad, just not in webos ;-).
unfortunately, the powers that be don't want discussion about the os that shall not be named, otherwise my "new users" guide would already have a nice fat section devoted to getting everything set up beautifully and mostly problem-free (a small amount of tweaking makes it rock-solid stable, similar to how you have to tweak webos for proper enjoyment)... Maybe I'll just do it anyway and see what happens.