So here are a few of my findings the past week:
Windows XP gives far better performance on the 9400m than vista (but this is to be expected)
Oblivion works better with Vertical sync turned off. It gives me about 9 more fps in most areas. I can then turn up the textures to high and get good fps. On the video I made for youtube, if I go to that same spot with vertical sync off and textures high, I get about 39 fps (on XP).
Sim City (every on that has ever come out) works great! Societies lags a little, but it did that on my buddy's dual 9800GTX setup. It's just a poorly programmed game to begin with.
The Sims 1 and 2 work fine. Seriously though, those have been out for years. They better work fine. Moving on...
COD 4 works wonderfully (as B&O was able to tell us earlier in the week). It's also a really awesome game. If you haven't played it, give it a shot.
WoW works fine. I logged into my buddy's account and played for a bit. It looks and works wonderfully. I never really got into WoW and after playing for an hour the other day, I'm glad I didn't. That game would have sucked my life away in high school, haha.
Crysis is ok...not great, but playable (at medium settings), but that's to be expected. Still a fun game!
Crysis: Warhead works a little better. They optimized the performance of this game a little more, so medium settings gives you better overall fps.
Garry's Mod (really awesome HL2 sandbox) works great. I spawned around 200 barrels of explosives and then blew them all up. It didn't lag much. I had the settings set the same as I did for HL2: Episode 2 (see page one of this thread)
I'll post more as the week goes on. Keep up the good work guys.
Trent out
Edit: I see now that B&O is using a MBP, but my statement stands. COD4 works fine on the macbook as well (although you'll have to cut down on the AA and such). Thanks for your contributions B&O!