Suppose I'm one of the few that don't hate barrel rolls, largely because I have no difficulty pulling them off. However if we take the most insanely difficult "special" move to execute every in the history of games (my opinion), it would have to be Guile's Sommersault Justice in Super Street Fighter 2*

*Charge down back, quarter circle to down forward, quarter circle to down back, up-forward and kick.

- F