I don't think this has ever happened before
I've actually seen a majority of the films nominated for the Best Picture Oscar. And I saw them all at the independent theater in my neighborhood. I've seen three: Brokeback Mountain, Capote, and Good Night and Good Luck, and to be quite frank, I don't know who I'm pulling for yet. All three were terrific films, with powerful performances, as testified to by the fact that Ledger, Strathairn and Hoffman also got Best Actor nominations.
And since Jon Stewart is the host this year, I might even watch the awards show.
Hah! Gotcha with that one, didn't I!