The Dispersal of Darwin has compiled a collection of evolution-themed Christmas stuff. You should browse.
My line of Squidmas and Happy Monkey cards didn’t make the cut because I guess they just aren’t emphasizing evolution enough.
Pharyngula
Evolution, development, and random biological ejaculations from a godless liberal
I’m visiting family for the holidays: that’s about all the Darwinian “survival of the fittest” I can handle, thanks.
Keep australopithecus in Christmas
Glen Davidson
PZ,
As a computer science guy I loved the XKCD, but the next one was definitely a Pharyngula comic.