My hair now does this without the flatiron! - Waves in 15 minutes! Section hair into big sections then braid each in a loose braid. Run a flatiron over each braid, let them cool down, spray hairspray and undo the braids.
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.