Not quite exactly sure why this works, but so far best explanation is that on the first frame of wakeup, if there is a meaty fireball AND an ultra flash, then the ultra will connect even if the opponent is blocking. Oddly enough, the fireball doesn’t actually have to connect (see vid ken vs sagat, where the fb just whiffs).
Setup 1: Foward throw, backdash, jab fb, fadc, ultra
Probably the easiest one (for me at least), and confirmed to work on Sagat, Cammy (while crouching only?), and Seth (while standing only?) I haven’t seen any vids that show it works on other characters (post em if you got em). I think it might not work on everybody because of the difference in the length of knockdown for each character.
Courtesy of desora24
Setup 2: Backward throw, jab fb, FADC, (kara) ultra.
There’s a larger window on this one – and it IS possible to throw the fb too early, which means this setup should work on everybody if timed correctly. Since different characters have different wakeup times though, it will probably be impossible to use this reliably against the whole cast. Also, it seems like the kara ultra is necessary for certain chars (e.g. Ryu).
Courtesy of Mienaikage: http://www.youtube.com/watch?v=rZfB5DRMsnk
Setup 3: Sweep, jab fb, FADC, ultra.
Don’t know if this is confirmed yet, but it seems like this should work. Like setup 2, there is a larger window where you can do it TOO quickly, so timing is tricky. Also, since spacing is no longer fixed (with throws the distance between characters is the same every time, but with a sweep, the distance between characters can vary) this one is probably the hardest.
If you are on the recieving end of it, then you be able to escape with an invincible reversal on wakeup (e.g. DP).