That Radiohead show in 2008 in VA wasn't cancelled. It was a torrential down pour and nearly half the people couldn't get to the venue because of flooding on the roads so they offered refunds to those people. Incredible show and environment, the lawn at Nissan Pav was a water slide but those who made it were loving it. @n00b100 said:

I can only imagine that this was a very difficult decision - I remember there was a Radiohead show in Northern VA that had to be cancelled because it rained so much that the stage was actually sinking into the earth. Bands with the kinds of followings Phish and Radiohead have are quite cognizant of how much effort their fans put into going to their shows. Hence the quick rescheduling.

I am with everybody else, though, that July 22 is going to be a goddamn rager and a half.