Bond is back. In the capstone to Daniel Craig's run, we see him confront his most classic enemy, Ernst Stavro Blofeld, the head of the shadowy Spectre. And, in a detail that I missed in the trailers, the political machinations of Max Denbigh, aka "C", better know to us Sherlock fans as James Moriarty. (I may have squeed a bit when he first came on screen, but you can't prove it.)
Short version: This is an excellent finish to the Craig Bond. It takes the style and plots built up over the last few movies and ties them up into a nice bow. While I still prefer Skyfall, Spectre is a solid film that I would be happy to watch several times (unlike, say, Quantum of Solace). The fact that Bond actually had a strong supporting cast helps tremendously.