One person, among many, I wish I could have learned some material from - he was adept in both bajiquan and bagua. In the second clip, at the 2:10 mark, I believe this demonstration was at the the Taste of China event - although I didn't attend I read and heard that many were disappointed by his overall presentation at A Taste of China - never quite knew exactly why.
https://www.youtube.com/watch?v=DNBM2WsMLW8
M Wang Pei Sheng Wu Style Taiji - Priciples with subtitles
https://www.youtube.com/watch?v=EuwvwscTs34
A Taste of China demonstration at 2:10 mark?