RyuApprentice recently shared a couple of new videos that explore armor cancels for certain characters in Super Street Fighter IV: Arcade Edition ver. 2012.
The first video shows of how to use armor cancels to allow Guy and El Fuerte connect their Ultra 1s. For both these characters, the trick is buffering the Ultra input with an EX run input in such a way that the EX run comes out first, canceling the Focus Attack, and then the Ultra comes out after. RyuApprentice has included captions that explain the technique, so be sure to turn those on.
Next up is a video showing some armor cancel and double armor cancel tricks for Balrog, including using an armor cancel to connect with his Ultra 2.