Neither film particularly made me spooge myself like almost everyone I know. They could have been divided in a better manner so that you didn't have one volume that was whiz-bang fighting and built something of a reputation for it, then have the second volume step back from what made the first noteworthy to many in the first place. I say about Kill Bill what I said about The Matrix Revolutions: "A cool film, but not a great one."
Certainly a very good collective work, but still not Best Film Ever, or even Film of the Year (as Vol. 1 wasn't for 2003). Credit for the latter award goes to Eternal Sunshine of the Spotless Mind (thus far, the year is still young).