In Parallels Desktop version 3.0, now in final candidate development, you can finally use 3D gaming without rebooting.
The other major feature is “SmartSelect”, which allows users to open a file in either a OS X or Windows program directly from OS X. You won’t have to fire up the Windows program first and open it the long way. New versions cost $79 and upgrade versions are $39 if you buy before June 6.