Hyper Text Coffee Pot Control Protocol (HTCPCP) Internet Standard RFC 2324 - a protocol, based upon http, written by the same people...did a little google on it, but all i seemed to find were comedy sites on it. i mean-it is an actual, valid, protocol...
port 9: discard - discards everything it receives...
port 17: quote of the day
port 37: time - give the time, in seconds, from the 1st of january 1900...
i'm sure there are lots more random compter things, but these are the ones i've come accross in lectures and...yeah...