I just recently started watching this show after hearing so many positive reviews and a lot of talk about it on TV com. I figured I had to check out what all the fuss was about and I'm glad that I did.
This show is very entertaining, funny and well written/acted. It may seem unoriginal given that it is about a group of friends that hang out on a regular basis (quite common premise in sitcoms), but it is unique in that it takes the community college setting and the various backgrounds of the individuals and make them all fuse together so well.
Also, I'd consider the humor to be more unique and witty versus your average screwball comedy.
I'd definitely recommend watching this show.