Very surprising results after installing Crossover Games, on my AMD Hackintosh OSX Leopard. I was able to run Counter Strike Source very effectively! No loss of FPS even in Window mode. I was able to play a movie on the dual screen while playing the game as well.

Pros
- Less to minimum configuration required
- Easy install
- Equivalent graphics rendering to windows
- Quick launch programs
- Optimum CPU utilization and memory resource allocation.
Cons
- Audio didn't work (but thats okay - i play games without audio anyway)
- Load times were a bit slow
- A bit laggy when dragging windows
- Only available for Intel versions of OSX not for G4, G5 or any PPC based hardware
A fully unlocked version can be downloaded of any torrent site.