Whether you're going for a few extra style points, or just trying to keep your pants legs off the ground and prevent yourself from stepping on them, there are plenty of times you need to roll your pant legs. So, do it properly.
Tame The Roll is site dedicated to "dressing from the knee down." They offer four roll techniques to commit to memory - "The Soda Pop," "The Standard," "The Pinch Hit," and "The Rustle." They've got videos for each style, as well as loads of inspiration photos:
See the rest of the videos at Tame The Roll.
[Photos by Novh and Petchmo. From TameTheRoll]