Perhaps my favorite test of all time: my instructor, Julio Toribio, demonstrating for his Nidan in Aikikai Aikido.
There's a who's who of Aikido in the Northern California scene in this video. Sensei Toribio, his uke Dennis Evans, Danielle Evans with the jo kata, Pat Hendricks taking ukemi for randori, under the auspices of Frank Doran at his Redwood City Dojo.
This test has endlessly inspired me. The fake out at the end of the randori (causing the two ukes to collide) is something you don't get to see everyday. That's a little bit of genius slyly tucked in.