I found this program, "Samurai Spirit" by accident on youtube a few nights ago, and I'm hooked! http://www.youtube.com/watch?v=kKqiFNGXPFU
The aikido episode has a couple of strikers attacking a Shodokan sensei in a park (in street clothes even!). He handles them very well, although the attacks don't really look like they are full strength.
Still a fun watch of a "realistic" aikido encounter. My sense is that they picked a shodokan sensei for the setup because of his experience with "resistence randori" (the term they use for their "competitions").