I'm sorry, but I've only watched the anime. However, I can wholeheartedly recommend it. Super funny.
The thing that irritated me was when Risa said that she was only 5'8". As a tall girl, the reason I wanted to watch it in the first place was because I thought she would be TALL, not slightly above average. Hell, my grandma's 5'10". >_<
But, in any case, it's a good anime. ^_~