Bruce Nauman work on YouTube

One excerpt and one full-length clip from 2 Bruce Nauman works now at the Berkeley Art Museum exhibit "The Rose Has No Teeth: Bruce Nauman in the 1960s." How does the YouTube viewing experience differ from the gallery one?

Stamping in the Studio (1968)
http://www.youtube.com/watch?v=ea6yCyHk78U

Walking in an Exaggerated Manner (1967-8)
http://www.youtube.com/watch?v=Vvj7yV4xVYg