and then there's an episode of one of lorenzo lamas' tv series. can't remember the one where he goes to his old aikido teacher for advice in catching some killer, blah blah blah...
It must have been about a decade ago, but Lorenzo Lamas sat in on a classe at HQ dojo. I don't recall where or who he'd been training with to get where he was, but if memory serves he was ranked as a yudansha and moved very well. So it wasn't all just movie magic... Just fwiw.