Go with the 60GB... that's a faster spinning HD and will give you better performance. You're going to be in law school, not ripping movies to your HD all day.
That said, I don't understand you people with the 250GB HDs - wtf are you storing on these bad boys?
You pretty much said it yourself. It's all movies and music. (In my defense, I've also done video editing, which can be pretty hefty.) A person has to put the entire series run of Thundercats somewhere, doesn't he?