I was chillin out over the weekend watching Glastonbury on TV (alas could not get a ticket) and noticed that Bjork has something familiar on stage!

She was in fact using a Reactable! It looked really cool and created some crazy sounds, which I guess matches Bjork

They have some news on their site about it.

EDIT: Just found a vid of her performing with the table: http://www.youtube.com/watch?v=xKZ1e3xrPOo