Definitely worth a watch. Although there are funny parts, this is not like Scrubs. A lot of the same music is used but the feel of it is quite different. Although I am not sure I would buy it, renting it is a great option and I plan to recommend this to friends.
Obviously, I loved the movie. Aside from being refreshingly original and down to earth, the writing and cinematography and soundtrack are brilliant. All told, the standout among my favorites, and a movie that I can watch countless times, not only without tiring of it, but appreciating more and more every time.
If you haven't seen this then you are in for a treat. I'm actually a little jealous of your position. Wish I could reexperience this for the 1st time. The score alone will bring you to joy tears and the story's so good. So odd and so good. The scrubs kid's a genius. ;-)