This quiz of "Which xyz are you?" is very very interesting. Found it on someone else's blog site, and just tried myself. Here's the result:
I like the description about myself, and I am also looking forward to have MacOS X as my next desktop operating system (need to convince Vivian to let me get a Mac, of course). If you have finish the test, have a look at all possible outcomes - it has got pretty nice descriptions on each operating system.