The topic of an upcoming Photoshop contest on Fark is to alter this image of Don Cherry. As soon as I saw the goatee and plaid jacket, I knew what had to be done:
It actually took more time to find a picture of "Sam Snowman" than it did to alter it.
Addendum: for another contest, I also did this photoshop of Dubya's speech in front of the box backdrop, but I don't expect it'll score very well (unless there are a lot of SF geeks voting).