What M:I 4 has over the other films is humour, with Simon Pegg taking the reigns as far as that is concerned. Pegg first appeared in the third film, and was indeed the comic relief then as well, but here has a more centralised role and his comedy is even more welcome than it was last time. It worked extremely well for the Star Trek franchise, where he took on the iconic role of Scotty, and it works just as well here. Jeremy Renner and Paula Patton are the new blood and both are very welcome additions, Renner proving very much that he could take over the franchise if Cruise decides to jump ship, while Patton is the eye-candy with the skills to back it up.
It may just be yet another instalment in an action franchise that essentially delivers the same sort of spy antics every time, Ghost Protocol does so with more bravado that it becomes its own kind of entertaining. More sequels are inevitable but Bird has delivered the best Mission: Impossible adventure yet.