Two of my favorite things:

1. Right after Magneto moves the Golden gate bridge... Day then night! Who missed that one!!!
2. The way Phoenix "burned" people to ashes... the ashes looked like blocky artifacts that weren't rendered well. When I think of ashes I picture the stuff that fell from Mount St. Helens. Not what was in X3

I agree with most critics... 1 1/2 stars. Too bad Marvel wanted to beat Bryan Singer's 'Superman Returns' to the theaters so bad they went with a poor script/director/etc... BTW, Superman Returns will rock!