"Smart film" refers to a special type of film that can change its transparency level when an electrical current is applied. It can go from being clear and see-through to opaque or vice versa. Full definition
I wouldn't go quite that far in my own estimation of it, but it's great fun and probably one of the most entertaining smart films of 2013. (chrisreedfilm.com)
Now, what if I was to tell you they were all in one of the funniest and smartest films of the year? (slashfilm.com)
The Coen Brothers have mined that rich premise to make an impishly smart film about the stupidity rampant in people who think they are being clever, and they are clever enough themselves to accomplish it with little that could be considered hyperbole. (killermoviereviews.com)