The intention for the webshooters in the film was to have them simply to help Peter guide/aim his webbing. They would've still been organic. As a result, they were deemed unnecessary and cut from the movie. They were pretty cool though. I recall one of the first downloads available on Sony's Spider-Man website was a webshooter screensaver. The screensaver itself was fairly diappointing though. It didn't really do much.

The DVD has a blooper reel on the second disc which features some deleted footage as well as some on the set flubs and gags.