Inception

I have never watch a movie like Inception, it has a pretty weird argument but it is really interesting and innovative.   

The movie it is about a man cold Cobb, an expert thief. He has a new challenge: to steal in dreams. He is offered to clean his name on his wife's murder by Saito if he works for him. Cobb had to do a new thing: not to steal in a dream, he had to put a new idea, which was to dissolve a new bussines a man has just inherited. They make a great team of experts about dreams and went into the 4th or 5th dream in this man. They could difference the level of dreams because of the colors.
 At the end, Cobb is free of the charges and turns and object he had to know if it was the real world or a dream. Depending on if it stops or not, he could know it, but at the end he turns it but it ends before we can know if it was really the real world, an open ending.

Finally I recommend it because Inceptions  is an unusual movie and you should be opened to watch a variety of movies not just those ones which you think you will like .