The Big Bang Theory gets a lot of hate and I have to confess I don’t really understand why. Sure it’s no Mad Men (what is?), and it relies too frequently on dumb blonde and fat jokes, but I just can’t muster a strong feeling about it either way. My wife and I used to watch, mostly in syndication, but I just couldn’t get enough of a foothold to stick with it. Despite my ambivalence to the show, one thing has nagged at me for several years. So in honor of TBBT’s return tonight for its ninth season, I’d like to discuss whether Sheldon and Leonard’s roommate agreement is legally valid.