Coldplay are huge fans of the Back To The Future movies. So, what better way to celebrate their love than to ask the star of those movies and all round legend Marty McFly himself up on stage.
The guys were in New Jersey on their current tour when Chris Martin's son appeared on the big screen with a request.
The fact that Michael J. Fox can get up on stage in front of thousands and play guitar live while suffering from Parkinson's disease is just incredible. The man is a beacon of the human spirit...and a mean guitarist!
It's about 2:45 when MJF comes out on stage.
