Avoid anything GNU/Linux ("Linux"), this means Ubuntu(rd), Debian (what Ubuntu is based on), Red Hat, Arch, DSL, etc. They're all crap, especially as a normal person's desktop OS
I'm a computer idiot, but a friend won't run anything but linux on his computer and I get around on it just fine.
If you -really- want to get into the *nix thing
I see this kind of thing all the time and have to wonder if we're seriously so lazy as a society that we can't even be bothered to say linux
