OK, I'm impressed...
I have tried a lot of virtualization "solutions" but this time I'm really impressed.
KVM (abbreviation of Kernel-based Virtual Machine) work fast, installed in less that 5 minutes and really easy to manage. And the best part is, that every virtual machine is just a process on the host. You can monitor (top) and/or kill it in a sec...
While still in the early development stages, KVM shows a real potential. I even can say that I have enjoyed "playing" with it.
http://kvm.sourceforge.net/
