http://uk.youtube.com/watch?v=4_MsyNkgMzw&feature=related&fmt=18
For those of you who have seen the video of the lady in yellow kicking plates on to her head, should recognize the similar act occurring here (above link). What I am wondering is… Has some part of the unicycle world started a fad for plate to head kicking? 
Similar-ar Acts
No.
umm all your links were unicycle related and they were the same two videos in all 4 links.
It is also a failry ‘traditional’ circus trick with various modifications added over the years.
Including, but not limited to, doing it on a raffie while idling on a walking globe.
Also altenating cups and saucers and kicking sugarcubes and teaspoons into the final cup.