Goldfinger

Hard to choose just one, but, and even though Conner is my favorite Bond, I've always enjoyed On Her Majesty's Secret Service the most. I think Lazenby is the most underrated of the Bonds.

I agree with that, I thought given the chance he could have grown into the role. That was a good movie and Telly Savalas was a good villian.

Quantum of Solace qualitively, Craig's Casino Royale for homage to Fleming that actually takes him seriously as a writer.

Dan Craig's Bond movies are the only ones which remotely reflect Ian Flemings books. The amount of sarcasm Hollywood traditionally put into their Bond franchise could be considered an homage, but on the other hand could have started off as poking a bit of fun at Fleming, his books were initially designed to try to translate some of the insider experience of working for MI5. Bond is a serious dramatic character without batman gadgets or machine guns behind submarine-supercar headlights, just a really good set of improvisation and old school spycraft skills, and a small calibre concealed weapon.

He was never written as the playboy-superhero existing in some fictional dimension that rains hot underwear models named after their vaginas. That's the Hollywood BondMan, it's not Fleming's. Daniel Craig is Fleming's Bond, to a T.