1 - Troy and Abed, The Bromance.
Troy and Abed have some of the best moments in the show and are often the viewers most favourite characters. As the show progress's you feel as if most of Abeds quirkiness has rubbed of onto Troy slightly. Both characters are played by fantastic actors and really are the highlight of the show.
2 - Paintball Episodes
Yes thats right Community has 3 Episodes which involve paintball events. This is where you can really tell that Community would be a special show, not just for these action packed episodes but how they are able to keep them to the current story lines and they actually matter. It isn't like Family Guy or The Simpsons when all is forgotten by the next episode, nope these actually count.