That's a tough tossup, I'd probably take 1939's three movies (Oz/Wind/Smith) over most of those films though. In terms of amount vs quality, 1984 wins. But if you're talking about classics, 1939 wins.
I prefer 1994, which brought us Forrest Gump, Shawshank Redemption, Pulp Fiction, Leon (The Professional), The Lion King, The Usual Suspects, and, pretty much, Schindler's List, which was released in December 1993. All seven are listed on IMDb's Top 250, 3 of them are in the Top 10, one of which is the top film on the list (Shawshank Redemption).
Other notable films from the year include the best version of Little Women (Winona Ryder, Claire Danes, Christian Bale), Nell (one of Jodie Foster's most underrated films), Tim Burton's take on Ed Wood starring Johnny Depp in one of his best roles, and Four Weddings and a Funeral.
I'd say late 93 through 94 takes the cake in films.