84th Academy Awards ceremony , presented by the Academy of Motion Picture Arts and Sciences ( AMPAS ) , honored the best films of 2011 in the United States and took place on February 26 , 2012 , at the Hollywood and Highland Center Theatre in Hollywood , Los Angeles beginning at 5:30 p.m. PST / 8:30 p.m. EST . During the ceremony , the Academy of Motion Picture Arts and Sciences presented Academy Awards ( commonly referred to as Oscars ) in 24 categories . The ceremony was televised in the United States by ABC , and produced by Brian Grazer and Don Mischer , with Mischer also serving as director . Actor Billy Crystal hosted the show for the ninth time . He first presided over the 62nd ceremony held in 1990 and had last hosted the 76th ceremony held in 2004
76th ceremony
76th Academy Awards
84th Academy Awards