Best 404 message
 

Nice one! I also have:

http://www.wyvern.com.au/~mustang/

http://my.core.com/~oldgrendel/cannot_find_p0rn.htm

and, of course, the 404 Research Lab.

My Faves are:

http://www.plinko.net/nevermore.htm

http://thcnet.net/error/404.php

There's another one that has a huge long-running (in 'typed-out' style speel) about how he's sorry he can't find the page etc etc etc... but I can't find it.

This guy just cracked me up during the "war"

http://www.stud.ntnu.no/~shane/stasj...or/div/15.html

that immediately crossed my mind but it was too much trouble to spend the 3 minutes looking it up; ranks up there with the 'page under construction' bit.

edit: I actually was thinking of this one but that is funny as well.