Funny, I am also in that boat (somewhat). I am moving back from a Powermac to a Powerbook and was debating which to get with a factor around WOW performance(my only gaming passion).

I installed it and played on a buddies Powerbook G4 17 1.33 and all was well. The newer models should be even better with the 128mb of video ram. Grab any of the current line with 128mb vram and I will see you in Azeroth....from my couch.

k