I've been fascinated by the progression of Bond movies all the way from Dr. No, to Casino Royale.
The movies themselves are so interesting, even from the sometimes absurd action scenes, to the sometimes absurd story lines, to the interplays between Bond and his women. The gadgets are fascinating and the movies give some insight into the cold war (it was always Specter who attempted to agitate the United States and Soviet Union into war, but it generally appeared that each side wanted peace).
I have seen them all and hands down, Casino Royale (with an "e") is one of the best, if not the best. The gadgets are balanced, the story line realistic and the quality of acting outstanding.
I used to be a Peirce Brosnan fan, but Danial Craig is a much better Bond. I am looking forward to Quantum of Solace.