Bloc Party at Virgin Mobile Festival (08/09/08) Photo: Tim Griffin (more) May 20 Black Box RevelationBuy TicketsAmex presale begins:Wed, 04/25/1212:00 PM Mercury LoungeNew York, NY09:00 PM Buy TicketsAmex presale begins:Wed, 04/25/1212:00 PM May 22 Bright Moments, LandladyBuy TicketsAmex presale begins:Wed, 04/25/1212:00 PM Mercury LoungeNew York, NY06:30 PM Buy TicketsAmex presale begins:Wed, 04/25/1212:00…