My favorite threads are the ones which make various staff members look dumb.

http://www.eyesonff.com/forums/showthread.php?t=43740 - Yams, Proto (who was Staff then), RSL

http://www.eyesonff.com/forums/showthread.php?t=45989 - BoB, various Site Staffers

And that's all that I found quickly in the Archive.

EDIT:

http://www.eyesonff.com/forums/showthread.php?t=49701 - No stupid people, but this is just "xD" quality.