I have just finished watching the third season of community and I have to say, it is now one of my favourite shows ever. Much like the first series, the 7 main characters are still at Greendale and are now getting into even more ridiculous circumstances than before. The jokes in community feel so natural and unforced it makes them so much funnier, I found my self laughing out loud several times every episode which is extremely uncommon for me. The study group still get into ridiculous circumstances, but something about the writing makes it feel unforced and fresh every time.
In this series, some episodes include a zombie outbreak, an episode made out of entirely stop motion clay figures, a conspiracy episode with loads of characters getting shot and remember the paintball episode from season 1? Well this time there are two paintball episodes. The season finale is a two part paintball war which is even better than the paintball episode from the first season and has a western theme to it, it's amazing. Lots of shows resort to zombie episodes and such when they run out of ideas and it feels forced and silly, but with community the crazy episodes are some of the best, and only leave the viewer wishing for more episodes like these.
If you already watched the first season of community, you shouldn't hesitate for a moment to watch this one. If you havn't seen the show before, then watch it from the beginning as you won't want to miss anything.
I couldn't praise community any more highly and recommend it to anyone who enjoys any kind of television - the jokes are even funnier than before, the plot lines even more involving and the characters even more likeable and interesting, watch this show.