Buffalo Yamanoshita Aikido Suenaka-Ha
This is from Sensei Chris Herman's Shodan test (black belt test). He is demonstrating kaeshi waza which are reversal or countering techniques. As Sensei Chris attacks his uke (Frank Pari), uke counters the attack, only to have his counter...countered. We'll have more video demonstrations to follow in the near future.
Aikido is beautiful to watch and practical in its application. Hopefully our video page can show this fluidity and practicality.

Here, Shihan Valerie does a short demonstration at Gasshuku (Summer Camp) 2012. Shihan Franklin, uke.