Thorvaldur Orn Kristmundsson/AFP/GettyImagesYoko Ono was in Iceland Tuesday to honor Lady Gaga for her humanitarian efforts, E! Online reports.

Ono presented Gaga with the LennonOno Grant for Peace in appreciation for Gaga's support of victims of the 2010 earthquake in Haiti and the 2011 Japanese tsunami, as well as her efforts to promote tolerance. read more ≫

ABC News RadioCelebration Day, the new concert film documenting Led Zeppelin's December 2007 reunion show at London's O2 Arena, premieres Tuesday night at New York City's Ziegfeld Theatre.  Prior to the event, the band's three surviving members -- Robert Plant, Jimmy Page and John Paul Jones -- as well as late Zeppelin drummer John Bonham's son, Jason, gathered at New York's Museum of Modern Art to chat with the press, and to address the ever-present question of whether or not they would ever reunite. read more ≫