how to do - if you press the PS button to open your XMB while playing skyrim, then hold select and while holding select, press the PS button again to exit the XMB. if done correctly, you will have super speed. you can do this to speed up the wait bar. this glitch also 'remembers' the buttons you were holding. say you were holding the anolog stick forward and then pressed the PS button. you can then let go of the anolog stick, hold select and push the PS button and you will have superspeed, and by just holding select, you will be moving forward!
the conceptual idea is the same for the 360's home button, so in theory, it should work.
*beware though* sometimes doing this across an area with a lot of things (ex. the marshes near morthal,) your game could freeze, so be careful.
another interesting thing ive found with this glitch is that while doing it at the start of a new game, the cart in front of you will hit a few bumps that will cause it to flip out and almost go upside down. have fun fellow dragonborns!