Comment on VMware Fusion

It works like advertised, you just need good amount of RAM to use it since another OS is running. Minimum 1GB, Recommended 2GB (depending of how many apps open).

This app is cpu intensive, so I avoid using it in laptops when they are not plugged.

Use Vmware Fusion ONLY when you have some app you can't find in OSX.

For Games: Use BootCamp. It's faster since it's native and you have all the computer RAM available. I even use a stripped down version of XP for it.