I come across a good forum signature every now and again, some of the classics of late:
I haven't lost my mind, I have it backed up on a disk somewhere
signature for hire
rent this space
powered by coffee and donuts
Put that in your pipe and look at it longingly, because you gave up last week
Hi! I'm a signature virus. Copy me into your signature to help me spread.
Disclaimer - I don't give a rat's ass if it's been posted before
There are 10 types of people in the world; those who understand binary and those who don't
You have now been hacked
Never buy a dwarf with learning difficulties. It's not big and it's not clever.
(one for all you coders out there)