What is your favorite OS?
Which OS(s) do you use?
List all the OSs you are relatively competent in using.



My favorite OS is by far MS-DOS 7 ripped from win98se. hehe

I use: WindowsXP, over Christmas I'm going to setup a dual boot with Gentoo Linux

very competent: Windows, DOS
competent: Mac
somewhat competent: Linux
incompetent: all others.