MLE and I have put together a list of groups of people that we think are terrible and, as a whole, are cancerous. the list goes in order of increasing horribleness, or from the best to the worst that society has to offer. feel free to contribute, but who knows, you'll probably make the list yourself!
Listing of Geeks/Nerds in order of least offensive to be stuck with at a convention or party to most offensive.
360/Wii players
PC gamers
PS3 fanboys
Comic books/MMO players
General forum posters
Universal Roleplayers (Normal dice. Ex: GURPS)
Specialized Roleplayers (d20 dice. Ex: AD&D)
Tabletop D&D
Collectible Card Game players (Magic the Gathering)
ItalianStereotype 
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