I saw Gravity, American Hustle and Wolf of Wall Street. Of those three, American Hustle would've been my favourite by far, but I guess 12 Years a Slave may well have deserved it too, haven't seen that yet. By the way, 6? You mean 9.
Didn't see the show either, because my other pet peeve about the Oscars - their being held at an utterly horrible time for everybody not living on the west coast of the USA - still holds.
And otherwise, I've seen none of the winning acting performances, but Gravity definitely deserves the technical awards it won, and I can live with Best Director for Cuaron - it just didn't deserve Best Picture, with a story that thin. The Great Gatsby deserved its Production and Costume Design awards, too, though American Hustle might've claimed one or both as well.