full Academy Awards 2013 Joseph Gordon-Levitt host Seth MacFarlane and Daniel Radcliffe dance onstage Oscar Awards 2013 Joseph Gordon-Levitt host Seth MacFarlane and Daniel Radcliffe dance onstage Oscar Awards 2013 Joseph Gordon-Levitt host Seth MacFarlane and Daniel Radcliffe dance onstage Oscar Awards 2013 Joseph Gordon-Levitt host Seth MacFarlane and Daniel Radcliffe dance onstage Oscar Awards 2013 Joseph Gordon-Levitt host Seth MacFarlane and Daniel Radcliffe dance onstage Oscar Awards 2013 Joseph Gordon-Levitt host Seth MacFarlane and Daniel Radcliffe dance onstage Oscar Awards 2013