Check out http://stormtrooperstride2.ytmnd.com/ - a stormtrooper actually hits his head when he's walking through the blast door!
I know this is probably old news, so speculate as to why this never got edited out. Plus I just discovered this and it's always good to have more Star Wars trivia material.

"it is time to get a credit card to complete my financial independance" — Tibby, Aug. 2009