Science and mice
The Onion reveals that scientists only experiment on mice because they hate the little bastards.
All kidding aside, this is a serious issue - animal rights, research ethics, etc. I hope to post more about this later.
Update, 20 May 2005: I've become aware that the above link no longer goes to the correct article. The gist of the original (satirical) article was that scientists had "admitted" that there is no scientific merit to experimentation on animals - they use mice for biomedical experiments purely out of spite and a desire to inflict pain on mice. Obviously this is satire of the portrayal of scientists by animal rights extremists.