It is a satisfying visual experience but the impact of the special effects is not groundbreaking. Its grand 3D potential was somehow lost in space. There were few wow moments.
It is basically a cast of two: scientist Dr. Ryan (what kind of name is that...) Stone and shuttle astronaut Matt Kowalski. The rest are just voices. Clooney spacewalks through his role without having to extend his acting beyond chat show level. Bullock has more to do and does it competently. Director and co-writer Alfonso Cuaróncan must take the blame for the over-the-top sentimentality.
As for the scenario, the longer it went, the sillier it became. Mercifully, it lasted only 91 minutes. It was a very small audience but it's difficult to say if that can be put down to Gravity's poor pulling power. Its box office and critical reception have been strong.