Hmm.. that movie is very interesting.
Mario and Sonic both stike a pose at one point, and Mario's looks like his You chose me! pose from the first SSB game (where he stuck that pose after you chose him on the character select screen) and it was one of his winning poses after multiplayer in SSBM.
I wonder if that means that when we taunt, we can use the other directional buttons for more taunts..