EoT is really a good film. I'd have to say it suffers from the Cruise effect here. They sacrificed the female character so you can have MORE Major TOM. Conceptually it really works well. The time jumps are done with a really clever theatrical device and the director really gets a huge nod for thinking this one up.
There is some really derivative special effects here as well as some downright pokes in the ribs and homage to films (and directors) past.
Stylistically this is as close as Tom will probably get to doing a Christopher Nolan film. Some parts of it are that smart. Some of the major plot issues have been made a little too simplistic though. If you read the novella this was based on you wont be terribly pleased. As a SciFi Actioner though, it works quite well. It's the film Matt Damon should have made instead of that visual abortion Elysium.