I'd just like to point out one tiny mistake - in Second City, when Murphy's dad is discussing Harry's family, he says Harry's mother died when he was three, not in childbirth like in the books. (He also calls her a gypsy, which I found really cool.)
I think it was to imply that his research was inaccurate.
Okay, but was it ever mentioned elsewhere in the show that his mother died in childbirth? Not to nitpick, but I'm just a stickler for details.