9. Let cops into your house/car. This is more of a civil rights thing, and if you're good you'll probably never have to deal with it, but unless the police have a damn good reason to search your stuff you can tell them no.
10. Drive in gear. If you have a manual transmission, you can coast along in neutral to save gas. Actually, I have no idea if it really saves that much gas, but I like to think it does.
11. Show I.D. to get on airplanes. I've never not done this (i.e. I always have shown I.D.) but there's no law saying you have to have it. You have rights! They will, however, look through your crap and hassle you, but feel free to give it a shot if only to make a point.