Thanks to the wonderful fount of Doctor Who news and knowledge that is Gallifrey One I found this cameo appearance by The Doctor in an American artist's cartoon. I'm surprised he expects his readers to recognise him, I didn't think our Time Lord was that well known across the pond... (With the exception of a few very clever people, some of whom might read this so I have to mention them.)
The * leads to a comment that reads "joke stolen from our friend Jon Schwarz", in case you were wondering.
Tom Tomorrow (blog) gives us This Modern World (at salon.com). In case the one I took this from is no longer the newest cartoon on those sites when you go there, here is the whole thing.