Celebrities Attend Heath Ledger Tribute

PERTH, AUSTRALIA - FEBRUARY 12: Film goers watch The Dark Knight featuring Heath Ledger during a public tribute outdoor movie night to the late actor at Burswood Park on February 12, 2011 in Perth, Australia. Australian actor Heath Ledger won a posthumous Oscar for his portrayal of the Joker in the movie The Dark Knight. Ledger died from an accidental toxic combination of prescription drugs on January 22, 2008. (Photo by Paul Kane/Getty Images)