Maybe I'm in denial but I never thought Ian Curtis was that huge a douchebag, even after seeing the movie. I just figured he was young, fucked up, and had a very poor idea of how to deal with people.
Similarly, I may just have been enthralled because it was Joy Division, but I liked the movie a lot and plan to buy the DVD soon as I scrape some cash together. Or remember that it exists, whichever comes first.