One thing I like about Open Source programs is that the programmers seem to have a little humor. This leads to things like the "insult" setting for sudo, which makes fun of you everytime you mistype the password. It's interesting to get messages like
"Maybe you should use more than two fingers, next time!
when you happen to hit the Enter key too fast.
Or, today I realized that another command works quite flawlessly:
who mom loves
gives you information about... you. Who else would mom love? Interestingly the Mac OSX programmers don't quite seem to have that kind of humor, so they just allow who am i, which also works on Linux.
Any other funny commands you guys know about?