Read the 10/10 and 3/10 Reviews...Personally here's my take.

Rating: 10/10 (29 July 2010)

I've read a good deal of the reviews for Inception, both glowing and scathing. In the end I agree with the glowing reviews, even though I'm sure that if I looked closely enough I'd see the same problems that the less giving reviews pointed out.
The reason? I went into the movie theater and lost myself in an epic. I didn't go in trying to find something wrong or incorrectly done. And in doing so I probably saw one of the best movies ever. Far too many people these days criticize movies over every single aspect...not incorrectly perhaps...but unnecessarily. You go to a movie to escape reality, to have fun. Not to pick it apart.
XD though you may do so if the movie is terribly done.
So in the end...yeah there are 'conceivably' flaws with the movie but if you are like me and are capable of losing yourself in something really well done. Inception will hook you in from start to finish.