I just finished watching the movie Tron: Legacy, and I must say for all the bad reviews it got, it was a decent movie. I do not feel that it deserved bad reviews.
I do think the themes have been explored differently before. But that's something we should be getting used to. Movies that were scary in the 80's no longer shock us today, as desensitized to violence as we've become.
Tron reminded me of the Matrix in many ways. It incorporated the philosophical and existencial questions raised by the Matrix, and even explored mythology as a sci-fi genre. Granted, the Matrix was not liked or understood by everyone. If you liked the Matrix, you'll probably like Tron.