TEC Sol T put together this video which showcases some interesting stuff from SF3 and SF4. At 1:30 you can see that interrupting Honda’s ultra causes the same kind of hitstun as a focus attack (this no longer works in SSF4). At 2:50 Guile puts on and removes his shades for a stylish combo. Another highlight for me was at 6:00 where Adon starts attacking Sagat from the front, crosses over and hits from the other side.
A full list of contributors is given at the end of the video, with some zero damage antics by Combonauts. Please note that not everything in this video was done manually, tool assistance was used for a few of the combos.