Communis comes from a combination of the Latin prefix com- (which means "together") and the word munis probably originally derived from the Etruscan word munis- (meaning "to have the charge of").
(ALSO, see numbers 1 and 2 of hypocrite)
Throughout the show's current 5 seasons, the study group have become a family of loveable misfits indulging in mis-adventures time and time again. Whether it's whole campus paintball tournaments, saving their school's a-sexual Dean, Craig Pelton, or planning elaborate heists, Community is a clever comedy that never talks down to its audience (unless you count gas-leak year) and is a treat to observe for anyone with a sense of humour.
Guy 2: "Yeah-HELL YEAH! I'll grab the snacks!"
Guy 1: "Season 1, 2, or 3?"
Guy 2: "All of em'!"