channels to look out for:
http://www.youtube.com/user/FrameAdvantageDotCom - US East Coast scene
http://www.youtube.com/user/HeartOfBattle - West Coast scene
http://www.youtube.com/user/ArcadeInfinity - SoCal arcade
http://www.youtube.com/user/DjB13 - in-depth character tutorials
http://www.youtube.com/user/godsgarden1 - videos from one of the best Japan tourney in 2009
http://www.youtube.com/user/LordAborigineSF4 - Japan scene videos

http://www.sf4db.com/videos.html
http://streetfighterdojo.com/sf4/index.html