And then you invited:
Delta House (from Animal House)
The Pit (from PCU)
Lambda Lambda Lambda (from the first Revenge of the Nerds)
A random group of S.H.I.T. Heads (from Accepted) (anti-frat, anyone?)
Lambda Epsilon Omega (from Old School)
Discuss. If you so please. And feel free to suggest any potential competitors I might have overlooked.