I am a big fan of original Tron movie in 1982. And while this was a sequel, it felt like it tried to breathe new life into the franchise -- similar to what the last Star Trek movie did.
Plot was a little weak, with one major weakness near the end. But whatever, at least it had more plot than the original film!
Graphics were good except digital Flynn's facial movements were not very realistic at all. Maybe it is easier to make a blue alien face look more realistic than a human is, but Avatar did a much better job with its facial expressions and mouth movements. I would have thought a year later a newer movie would have been better at it.
Then again the facial expressions of the human protagonist was a little odd at times. That smile... I dunno.
Daft Punk Music was awesome, I wished there was more of it in the film. I might have to get the soundtrack.
I was entertained by it and will definitely get the DVD.

A 3D marble platformer using Newton physics.