Saw it yesterday. Good popcorn flick but definately the least engrossing of the 3. The problem with the movie was it was made like a series of scenes of mutant tricks. The director spent so much time on trying to show all of the cool things mutants can do and didn't spend enough time on actual plot and drama to get you to involved in the story or empathize with any of the characters.
Not enough time was spent on Jean's resurrection and transformation into Phoenix; not enough time was spent on the back story of Leech, the cure and Angel. All in all, good flick (for munching popcorn and being entertained) but poorly written story.