I am a big fan of The Big Bang Theory. I refuse to watch the show out of sequence though; I want to watch all the episodes in order. That means I am a few seasons behind because I am too cheap to buy the box set and keep waiting for Netflix to hook me up. If you are a fan of the show, check out these Minimate sets.
There are two sets available and each has four characters and other props. Series 1 set offers Sheldon in the Green Lantern shirt, Howard, Amy, Raj, a remote control, laptop, couch, and figure stands. Series 2 includes Sheldon in the Flash shirt, Leonard, Penny, Bernadette, as well as a tiny roommate agreement, soda can, chinese takeout box, chopsticks, and the couch.
They look a lot like more articulated LEGO minifigs to me. In fact, I keep looking at their feet wondering if they will stick to a LEGO brick. You can pick up either set for $19.99(USD) at ThinkGeek.