Here is a link to a video of Imrat Khan's uncle, Ustad Wahid Khan, playing Surbahar in a very famous film, The Music Room (Jalsaghar). There are beautiful audio recordings of Imrat Khansahib's forefathers but this is the only video representation.
Click on link:
http://www.youtube.com/watch?v=gVznvC8pZxs
Enjoy the video of Ustad Wahid Khan