There's a bunch of them in IGN. New videos of Sonic The Hedgehog Next Gen. And there's some new ones on Gametrailers. I don't know if some are the exact same, as that tends to happen. I haven't looked at all of the vid's for Gametrailers so I don't know.
http://www.gametrailers.com/gamepage.php?fs=1&id=2146http://media.xbox360.ign.com/media/749/749072/vids_2.html