This year’s fall TV lineup couldn’t be geekier. With two new network shows breaking out the beakers and several returning shows ratcheting up the scientific tension, it seems lab coats have taken over the small screen, no doubt to the chagrin of grizzled cops, desperate housewives and testy lawyers. We tell you which shows should top your TiVo queue, which ones are as fun as math camp, and which you can watch with your girlfriend. (Just kidding, we know you don’t have a girlfriend.)