full show Robert Downey Jr Chris Evans Mark Ruffalo Jeremy Renner and Samuel L. Jackson present onstage Oscars 2013 Robert Downey Jr Chris Evans Mark Ruffalo Jeremy Renner and Samuel L. Jackson present onstage Oscars 2013 Robert Downey Jr Chris Evans Mark Ruffalo Jeremy Renner and Samuel L. Jackson present onstage Oscars 2013 Robert Downey Jr Chris Evans Mark Ruffalo Jeremy Renner and Samuel L. Jackson present onstage Oscars 2013 Robert Downey Jr Chris Evans Mark Ruffalo Jeremy Renner and Samuel L. Jackson present onstage Oscars 2013 Robert Downey Jr Chris Evans Mark Ruffalo Jeremy Renner and Samuel L.