Waiting for GT5 to hit the PS3, so I have a reason to buy it. Only reason I got a PS2 was for GT4, and I'll be selling it and GT4 when 5 hits.
That good - that I buy a game system for 1 game? YES.
Saw a GT5 demo in gamestop a few weeks ago, and did a double-take to make sure it wasn't a 'real' recorded car race.