In the opinion of a cinema buff i would say that there are some serious omissions from this list. Chief among them would be Letters from Iwo Jima, Lost in Translation, No Country for Old Men and Gladiator.
Others that i would have put on the list would be The Royal Tenenbaums and The 40 Year old Virgin in best comedy.
And for you're best movie of the decade i'm sorry but i can't see how you can even put Inglorious Bastards up there when it wasn't even Tarantino's best work of the decade and i personally would not have a single one of those movies in my top 5 of the decade save maybe Children of Men. For me it would have to be There Will be Blood, it features one of the greatest acting performances of all time by one of the best actors of all time in Daniel Day-Lewis and is an amazing exploration of what can happen to a man in the life and mold of Daniel Plainview and his ruthlessness in the frontier of oil drilling.