Subitai,
Thanks for the reply and points.
The so called "Demo Guy" is Master Liu Ji Fa and is a former Classmate of Tony's back in the original Wu Taiji days (Ma Yueh Liang, etc).
http://www.youtube.com/watch?v=Dc31AqRyD-0
In the videos in my original post, Tony is 70 years old. I'm not sure why these guys do the "hopping" thing but it's a tradition I've seen over and over again.
I will say this, Tony's level is very high in my opinion that may not be apparent from the videos.
To be honest with you, I expected to see more from the Chen XiaoWang video you posted.