Willie Colon was drafted as a guard, and now is seeing action at both T positions. I've heard good things from the coaches about him having a nasty streak, and now this:
"One sign that a young player is doing some things well in camp is when the coaches start teaching him additional positions. Willie Colon, who opened camp at right tackle, started taking repetitions at left tackle on Monday."
He must be doing something right if he's able to play both tackle positions at only 6'3"..most are 6'6" or so in the NFL.
http://news.steelers.com/article/67156/