Heh "Typical" is a little vague, but let's try a weak definition.
I'm decent on Windows, and I do light helpdesk as part of my official job at work. So I'm clearly no Turbo-Newbie. Yet all the assumptions of Linux break my instincts, so I am a classic mid line Windows user trying Linux for basically the first time. I could have picked any of 5 cores, I tried OpenSuse last year, it was okay. This year I decided to try to stay as close to Debian as I could, but all the pure FSF principles lose out to just getting a working box, even if that means Non-Free Codecs.
I believe I am representative of a big untold group of users out there. Get me at least as far as a desktop with Flash and Sound, and I'll slowly learn the other stuff later.
In a sense there's only three OS's, Windows, Mac OS X, and the Linux Family. (I'm skipping the outliers.) So I don't care to get stuck in Mac vendor-lock, so the remaining Non-Windows choice is Linux. Also, I like their philosophies.