Fri Apr 28 2006 22:11 PST:
The I Ching calculator from Dirk Gently--online! I always pictured the error message as being displayed in the same font as the rest of the calculator output instead of a wacky Comic Sans-meets-Dingbats font, but Marvin in the Hitchhiker's Guide movie didn't look like I expected either, so I'm accustomed to the bitter Arcturan Mega-gin of disappointment.