10. Bourne
Strictly speaking, the Bourne series is now a quadrilogy with the not-starring-Bourne Bourne Legacy release, but that film is better considered a spin-off, considering its position within, but branched off from the main Bourne time-line. Which is handy, considering how flat that film turned out to be. But taking only Matt Damon's original trilogy, adapted from the great works of Robert Ludlum, the series is a tour de force, basically inventing modern action films (aside from the nostalgic revivalist films like The Expendables) - or at least heavily influencing their style - and also probably informing a whole generation of action heroes, including James Bond. Built on a commitment to stark, shocking violence, without the glorifying frills, Bourne's camera-work inspired a raft of copy-cats, which were never as successful, and they changed the trajectory of Matt Damon's career, giving him an action edge that had otherwise been absent from his body of work. Like few other successful trilogies, the films actually increased in quality with each release, making Ultimatum the finest of all three. Considering the nature of audience engagement, and how expectations can derail established properties, that is a huge achievement. Interestingly, Doug Liman's 2002 adaptation that kicked off the franchise (and a heaving mass of copycat stark actioners) wasn't the first attempt to bring Bourne to the screen, as it was preceded by a 1988 TV movie, starring Richard Chamberlain, which adapted the original Cold War novel far more closely.
The Uncharacteristic Low Point? It's no reflection on the films themselves, but the myriad copy-cats who borrowed Liman's fight choreography and cinematography style have made the same sort of sequences in the Bourne movies feel less evolutionary.