I just saw Mission Impossible IV, and it was awesome! Even better was the fact that there were many nice watches to see and identify during the film. Below is the start of a list that everyone can agree with or dispute but also add more detail to as more people see the movie.
Jeremy Renner's character - Rolex Sea Dweller
Tech guy on the team - BAD ASS G-Shock (there is a thread about this in the G-Shock sub forum)
Ethan Hunt (Tom Cruise) - Tudor Heritage Chrono (per watch-id.com or G-Shock thread mentioned above)
Indian Billionaire - Rose Gold Vacheron Constantin???? Help with this one please!
Arms dealer - Omega Railmaster with mesh bracelet maybe???? Help with this one please!
Russian prison escapee (same scene as arms dealer) - Black Hamilton Chronograph with black rubber strap????Help with this one please!
Bad guy with a beard in scene at Burj hotel in Dubai - JLC maybe???? Help!
Another character - Luminox???? Help!