A great read. Obviously a considerable amount was changed before or during filming, as the final result is about twenty minutes longer than this script and naturally has a lot of modified scenes and such. But the basic structure is intact.
Interesting to note that the script is credited "By David Hayter" and with "revisions by Dan Harris and Michael Dougherty". Does that mean that Hayter deserves more credit than he got? I do think he recieved co-writing credit for X2, but Harris and Dougherty get a lot of the kudos writing-wise.
