You don't expect much from the fourth installment of an action franchise, but this one's a terrific popcorn flick. There are a couple of great action sequences, and a story that holds together reasonably well and provides stakes high enough to hold our attention.
No one is called on for any great acting, to be sure, but Tom Cruise, Jeremy Renner, and Paula Patton are pretty to look at and fight well, and Simon Pegg provides effective comic relief.
The movie's high points are both set in Dubai -- the much-promoted sequences in which Cruise climbs the outside of the Burj Dubai tower, and an even better chase scene set during a dust storm.
Lots of fun, and a very pleasant surprise.