Spider-Man 2...the movie one. I had completed it within about 3 days. Afterwards I just spent days upon weeks upon what was basically a year, swinging around New York with no real purpose...maybe giving back the odd balloon or stopping the occassional mad driver. It was fun, just swinging for no real purpose. End of the day though, probably a huge waste of time, considering they've never achieved that level of zen like web-swinging in any other spider-man game to my knowledge...