It’s a shame to spoil the film, but according to the (London) Times’ movie guy, Leo Lewis, here’s the unsatisfying finale of Spider-Man 3:

Also disappointing is the inability of the director, Sam Raimi, to end the romp without a fleeting shot of the American flag. The Stars and Stripes just happens to be fluttering behind Spidey as he makes his triumphal return to honour, probity and good honest fist-fighting.