The National at Virgin Mobile Free Fest 2009 (more) Photo: PJ Sykes UPDATE: So much for my lame guesses, the whole 2010 Celebrate Brooklyn! lineup is official now and you can view it over here. 2010 Celebrate Brooklyn! @ Prospect Park Lineup 06/09/10 Opening Night Gala 06/12/10 Allen Toussaint 06/29/10 Passion Pit w/ Tokyo Police…