Any recommendations for video game music? I like listening to Halo Wars, Gears of War 2, and Pokemon Diamond/Pearl. Thanks!

Personally, I haven't listened to any of those, but I can highly recommend the entire Medal of Honor Collection (Michael Giacchino, Christopher Lennertz), Mercenaries: Playground of Destruction (Giacchino), BLACK (Chris Tilton), Red Orchestra (Matthew Burns), and several others. Mind, they are all essentially orchestral.

If you're looking for something different, then try out Freedom Fighters (Jesper Kyd) or Call of Duty 4: Modern Warfare (Harry Gregson-Williams). You can find every one of these soundtracks here at GMH.

I agree with Frontine1944. If you're looking for an orchestral soundtrack, you should also try Mateo Pascual (Commandos 2, 3), Gary Schyman (BioShock), Sniper Elite and Ace Combat Zero OSTs. Then again, if you like something "darker", you should try Darkness Within and Fahrenheit soundtracks.
But if you like action, you should consider trying Cold Winter, Max Payne, CoD 4 e.t.c.

Hope that was helpful.

I personally like the Konami artists that do the mixes on DDR. Naoki and Akira are my favorites.

I agree.

same here..I definitely agree..

I can higly recommend the Thief series and System Shock series by Eric Brosius (kinda scary), furthermore the Myst-Riven Series by Robin Miller (quiet calm). An excellent Soundtrack is the Call of Cthulu Soundtrack, Splinter Cell Chaos Theory and Splinter Cell Double Agent, furthermore McGees Alice OST and F.E.A.R. and S.T.A.L.K.E.R

If you like bit more rocking soundtracks try
Descent II, Quake II

an absolute must have is the Unreal Series

from Unreal - Unreal Tournament III

Hope theres something included for you...

If anybody has an idea whats missing i'm curious to extend my collection

greetz so far
valmet62