You guys know the guy who played Piece in Sh15uya and who's playing the goddess trio's butler in Garo? He's a friend of mine, and one of his first stunt gigs in Japan was doing motion capture for a commercial...
...a panties commercial. They're *special* panties, too, apparently they're like a Wonderbra for butts. It was all done in CGI, with a 3D anime schoolgirl walking along happily, then being attacked by a female ninja/assassin (played by Mark). They fight for a few seconds, and then the schoolgirl wins with the power of her BOUNCY ASS. She smacks the assassin (ah, poor Mark) into the sunset with her ass, and of course does a little "YATTA!" pose.
A mutual friend of ours should still have the commercial on tape somewhere, along with another really funny one Mark starred in... I should see if I can borrow them and digitize them.