Little sister just did a fish tail braid for me! :) Now I gotta learn how to do it! How to: Fishtail Braid. The BEST tutorial on how to fishtail braid I have found. Difficulty: easy to do.
The Beauty Department -- Double Rope Braid Bun. Pull hair into 2 ponytails side by side, section each into two and rope braid. Twist right rope braid counter-clockwise and in, then do the same with the left rope braid. Finish with hairspray.