Clare Gaylard Glass 

http://aiweiwei.tate.org.uk/content/717786429001

Well the link above is not a great video for the content but for a parent it has amusement value. The children DID love the exhibition and did want to make a video, then bailed when we pressed play, and then tried to press the button to cut me off mid-flow.. So off camera I am seizing then holding a small hand away from the off switch while I try to keep my flow.