PZ Myers has also depicted himself in South Park form, using South Park Studio v2.0, and so have a number of other academics. Here's a catalog of what I've found so far:
Yowling from the Fencepost
The Dubious Biologist
De Rerum Natura
First observation: stubble. I guess most academics don't shave.
Second observation: glasses.
I'll be happy to add anyone else to the list.
Additions to the list: