TROTF is a great piece of entertainment. The CGI and the action is all on a scale that hasn't been sustained like this in any other film to my knowledge.
It benefits from being an epic action film and yet at the same time it is not grandiose. Some things in the film are spot on some things are not.
The only real flaw is that there are just simply too many comedy Robots in this film. Although there are alot of robots so thats not as bad as it sounds.