Green Group:
S.T.A.L.K.E.R. - Clear Sky
Rainbow Six - Raven Shield
The Witcher – game isn't creating start menu folder.
Euro Truck Simulator - work's great

? Group:
Test Drive Unlimited - There's install shield issue. At the end I was unable to install it, but if you have old installation files on your HDD it will run smoothly. Install shield issue is only in x64 version. Server 2008 x86 is bug free, and game is installing properly.

Games tested in my Server 2008 x64 workstation.

Future Compatibility tests:
The Elder Scrolls III: Morrowind + Expansions
The Elder Scrolls IV: Oblivion + Expansions
Gothic III
Gothic II + Expansion
Hitman – Series
Euro Truck Simulator
Medal Of Honour Airborne
And Every Game I'll find in my room

Installed Dimensity, Started game and it crashed (exception code 0xc0000005). Following steps did the trick:

1. Check "Turn on DEP for all programs and services except those I select" box under Data Execution Prevention
2. Add path to DimensityPl.exe to exception list.

I think, these steps may help out also for other applications which have DEP issues.

Not tested with x86, but probably works.

Found recently that Dimensity has patch v1.2 which also repairs issue, so not need add it into DEP ignore, if patch installed. But workaround may still help out other (not repaired) applications.

A really old but funny game works that I would never expect-Jurassic Park:Trespasser! That game is very funny EA released it as a full version game but it really looks and plays like a rushed beta! The arm Physics are my fav part of the game! You will ROTFLYAO! http://en.wikipedia.org/wiki/Jurassic_Park:_Trespasser

I will also test Sins Of a Solar Empire, City Life, and Cities XL when it comes out. Spore is working really good as well as EVE on my system. I also tested oblivion and works great! I will get to Bioshock soon.

Call of Juarez installed fine for me, WS2008 Ent. 64-bit. I only say this because it's listed as unable to install.

EDIT: Just got done playing in DX10, works flawlessly.

Call of Juarez works on mine, I didn't get a script error during the install, I'm using Server 2008 Standard Edition (32 bit)

However I do sometimes get a crash error during the game startup, minor issue.

Spore now refuses to load. Will try re-installing. It crashes.

Works: Far Cry 2
Works: NBA 2K9
Works: Fallout 3
Works: Call of Duty: World at War
Works: Vampire The Masquerade: Bloodlines
----
Failed to Install: Bully Scholarship Edition - Comes up with an error saying it can only run on Win XP, Server 2003 and Vista.

EDIT: Added some games

Civilization 4
Enemy Engeged: Comanche vs Hokum (Severe graphics errors, not necessarily OS related)
Far Cry 2
FlatOut 2 (shows an error on exit, but runs just fine)
IL-2 1946
Sins Of A Solar Empire
Strike Fighters: Project 1 (might also apply to "Wings Over [Somewhere]")


Upcoming:

Flight Simulator X


All tested on a G80 8800GTS 640 with Geforce 178.46 drivers.

Just to update things a little more:

Fallout 3
Sid Meier's Civilization IV: Colonization
Left 4 Dead (DEMO)

...more to come.