I know it's a small nitpick, but the show was supposed to be set in Pasadena and yet the characters wore long sleeves, coats, etc the majority of the time. I know it probably gets chilly there, but it seemed like they wore seasonally inappropriate clothing for the fictional setting. I'm not saying it's like they made it snow at Xmas, but it seemed a little off in terms of wardrobe and setting.
I know, this is a minor, insignificant thing. It was just something I noticed after watching the DVD'd.