http://www.youtube.com/watch?v=j16eVLDt2HI
And what came BEFORE Big Bang?
http://www.youtube.com/watch?v=ypjZF6Pdrws
And, recently, why he things Quantum mechanics is wrong:
http://www.youtube.com/watch?v=HPH-SzWF46w
Full interview from above: http://www.youtube.com/watch?v=sGm505TFMbU