What makes Community so fantastic is that it isn't bound by the constraints of a regular 'sitcom'. Dan Harmon and his writers are willing to try things that are so outside the box that when you actually see it, your mind is blown. In season 2, they basically take season 1's "Modern Warfare" episode as a jumping off point, then just keep getting better. They pay homage to tons of film and TV tropes, like classic stop-motion animated movies ("Abed's Uncontrollable Christmas"), mockumentaries like The Office ("Intermediate Documentary Filmmaking") and spaghetti Westerns ("A Fistful of Paintballs"). And while it might sound like they're just ripping off other shows and movies, along the way they manage to create things that we simply haven't seen on TV before. Who would have thought that an accurate depiction of a Dungeons and Dragons game (no visual representation, no sound effects, just the characters talking) could be such good TV ("Advanced Dungeons and Dragons")? However, this show isn't for everyone. It requires a fairly thorough outside knowledge of pop culture and its tropes (in other words, if you didn't understand any of the references I made above, you probably won't understand this show), which is what has prevented it from being a mainstream hit, but has helped the quality of the show immensely. Simply put, if you're not watching Community, you're missing out on one of the best comedies, maybe one of the best TV shows, in recent years.