• LiangHuBBB has a compilation of perfect matches mostly spanning the Street Fighter 4 series, but you'll see other games in here as well. Submitted by zIIGhostIIz.
• IISETHII discovered a bug with Seth in SSF4 that works against Makoto. Also submitted by Duckmouth.
• MoD1ns1d3 put up a couple of nifty Guile SSF4 combos on his YouTube page.
• A set of videos showing how universal overheads can be used in Street Fighter 3 Third Strike were posted by C-Royd, available in two parts. Clips contain NSFW language. (Part 1 | Part 2). Tip from Warren T., ShaftyCakes and Indy00.
• Purbeast's SSF4 Android app which has frame data and other information is now free and ad supported.
• JohnRambo of Dontblowthis.com put together a set of SSF2T highlights between M. Bison and Dhalsim. Mentioned by kSummer.
I think that II SETH II is up there with Hiropon, Online Tony and Poongko. Check out the replays on FinestFighters' YouTube channel. He does some really great stuff. I particularly like his Sonic Boom FADC into head stomp + cross up HK. Haven't seen anyone else do that.
Holy crap, I wish his normal teleport was that fast lol