Happy contrafactual public domain day (what you've lost)
Jennifer Jenkins sez, "What could have been entering the public domain in the US on January 1, 2012
? Under the law that existed until 1978... Works from 1955. Asimov's The End of Eternity, Nabokov's Lolita, the play Inherit the Wind, Hitchcock's To Catch a Thief, Disney's Lady and the Tramp, Rebel Without a Cause, The Seven Year Itch, the music for Blue Suede Shoes and Tutti Frutti, and Laurence Olivier's film version of Richard III... What is entering the public domain today? Nothing."