Casino Royale is fantastic, a brilliant assured return for Bond, eschewing the jokeyness (which had always been there, but had become ramped up to absurd levels in the Brosnan movies) in favour of gripping tension, and suave espionage. Loved it.
Quantum of Solace was just a big dumb action movie. OK for what it was, but could have been any old hollywood shite where everything explodes.
Skyfall was good, but it was more of a siege movie than a spy movie. There wasn't much Bondy stuff going on. I think it was a great film though.
I hope for something more akin to classic bond, like Casino Royale for the next one.