My favorite has always been the 'Nation of Dumbies.' By thread 26 the other concedes:
"Oh well. Thanks, guys. Apparently the whole thread is screwed."
...yet the thread continues into the 500s. LOL
Also, there's this:
Okay, genious, but how do you spell "dumb"?
That thread was a riot. There have been a couple great threads. Remember close your tags? Some of those threads were classics. Kind of sad it was fixed.