YouTube at 2x speed + 3D (and 1.5x, 0.5x, 0.25x)

YouTube - Broadcast Yourself.


YouTube has a choice (link above) to switch to HTML5 (WebM) video player instead of flash.
That player has speed up and down option in settings, and even (converted) 3D! It is not perfect, some (rare) videos do not play without flash...