An unusually large Near-Earth Object, 2012 LZ1 has just been discovered by Rob McNaught and colleagues on 2012 June 10/11. The asteroid is roughly the size of a city block (1,650 feet wide) and will pass within 14 lunar distances of the Earth on Thursday, June 14, 2012.
The possibility of a collision is nil, but it should pass close enough to be filmed on camera. If you want to watch this event unfold, the Slooh Space Camera will track live along with its discoverers.
Visit the site for the countdown clock.
This is really a neat site if you like video/live images of space events.
Here it is. It was filmed by the Remanzacco Observatory in Italy.