The Concert For George!
A free 24-hour web event, starting at 3:00 A.M. Eastern at GeorgeHarrison.com. (This is the concert from 2002 that featured Eric Clapton, Ringo Starr, Paul McCartney, Tom Petty and... Monty Python.)
(Today would have been George Harrison's 68th birthday, and his estate is streaming "The Concert For George" in its entirety. The Blu-ray version of the show is being released next month.)