My discovery of the day: The various outfits of each Big Bang Theory character are actually all the same, just coloured differently. Whether they're at home, at work or going out, Sheldon almost always wears a double-sleeved T-shirt (often with a Flash motif), Amy has a grandma pullover over a plain skirt and tights (covered by a white lab coat when she's at work), Leonard loves his jackets and hoodies (this guy must be freezing all the time to dress like that), Bernadette is usually seen in a patterned knee-length dress with a bolero-like thingy, etc. Penny's wardrobe is more varied, but those lumberjack shirts still show up quite a bit, good for her that she's pretty enough to wear them. The prize for the ugliest style of clothing definitely goes to Howard, but Raj isn't far behind.