The above is just an order of random thoughts about how awesome debian GNU/Linux is, as well as Xen, not much more.
But guess what? I am thinking of doing a presentation of virtualization one of these days. It will be very good, and will include qemu, kqemu, kvm, xen, hypervisors, para-virtualization, containers openvz, and lxc.
I'd also like to do a presentation on GNU/Linux, in general, but with a special focus on debian and ubuntu (in my humble opinion, debian and of course friends have made the impossible more than possible - they have continue to redefine what it means to achieve greatness in the field of computing; ubuntu and of course friends are doing a terrificly remarkable job of letting the world know).
Thanks to all the contributors, seriously.