Hyper-V Program Manager
Quake. If you do not know about this game - then I am not going to try and tell you about it. Really. Go check out: http://www.idsoftware.com/games/quake/quake/. Suffice to say that it is one of the key games in the evolution of the 3D first person genre of computer games. Most notably it was the first 3D first person shooting game where every object was displayed using textured polygons (predecessors resorted to 2D bitmaps for many objects - or untextured polygons). Nicest of all is that Quake runs beautifully under Virtual PC:
In fact - Quake is one of the standard tests that we run whenever we make low level changes to Virtual PC. One thing that I have encountered recently is that if your computer is too fast - Quake can have some timing issues (running to fast or having erratic speeds). This can be easily remedied by using a standard slow down utility inside of the virtual machine (you can search my blog for pointers to such tools).