This movie was amazing, the score by Daft Punk complemented the striking visuals perfectly. It felt like the visuals from the original Tron were given a futuristic facelift with some of the best looking CGI I have ever seen. This movie takes special effects to the next level, especially with the MoCap scenes (which are the best I have ever seen). The plot is good but not excellent; however, this does not really detract from the movie at all. The 3D is not overused and does not interfere with the movie watching experience but instead enhances it. I would also like to note that the West side's Warren's Imax is amazing and HUGE.
I like action movies and generally like movies which are based off of comics and franchises from my childhood. I liked the first movie even though it was cheesy and focused more on special effects than building characters or a solid plot. Revenge of the fallen goes the same way. It doesn't have a too involved plot and the end is guessable half way through the movie, but it does have great special effects and a solid soundtrack. The love story in the movie is awkward as it is trying to skirt the territory between "o.k. for kids" and "interesting for adults." All in all I'd say it's worth watching.