Perhaps because it's Bond's 50th anniversary, this installment of the franchise spends more time looking backwards than forwards. Casino Royale was such a great "reboot" of the series that Skyfall seems a bit stale in comparison. For Bond lovers there are sentimental flashbacks to Istanbul (From Russia With Love) and the requisite sacrificial women. Bond once again cares about drinking Martini's shaken. And by the end (spoiler alert) we even return to M's old office and Miss (maybe it's Ms- some progress) Moneypenny, hat rack, quilted leather door and all.
There are great fights scenes and chases on a train and through the London subway, and some clever dialogue (although not as wonderfully snarky as Roger Moore's, if that's your thing), but much of the Bourne-style "realistic" and gritty edge that had entered into the franchise with Casino Royale has been forsaken for nostalgia and a patchwork narrative that makes little sense. By all means see this, as it is beautifully made and fun, but don't be disappointed if it feels a bit like a stylish rehash.