Here are a few favorites:
Yankeepride vs. TOPDAWGWOOFWOOF
http://www.huntingnet.com/forum/tm.aspx?m=1555066&mpage=1
http://www.huntingnet.com/forum/tm.aspx?m=1557722&mpage=1&key=&#155788 9
Yankeepride - American Pride Day
http://www.huntingnet.com/forum/tm.aspx?m=1557865&mpage=1&key=&#155786 5
...and I don't know which thread it was, but Hiawatha said "If I ever get in trouble and need a lawyer, I'm calling Atlas." That little quote always stands out in my mind as being one of the funniest things ever.
-Member most likely to turn a simple post into a 10+ page thread
GMMAT - no contest.