The two titans of the found universe, Found Footage Festival and Found Magazine, will go toe-to-toe at the Brattle Theatre (40 Brattle St.) in Cambridge on Thursday, April 25th (8 pm) in a battle royale of found stuff. Both camps—Joe Pickett (The Onion) and Nick Prueher (Letterman) of the FFF, and Peter and Davy Rothbart (This American Life) of Found—will be sharing their favorite finds to determine once and for all whether found notes or found videos will reign supreme. There will be music, comedy and blood. Tickets to the show are $12 and are available in advance at www.foundfootagefest.com or at the door. The event is part of Brooklyn Brewery’s MASH tour (brooklynbrewerymash.com) and a portion of the proceeds will benefit the Boston chapter of Slow Foods USA (www.slowfoodusa.org).