Slideshow: The Joy, Burden of Being Spidey

Being a superhero -- saving lives, foiling evil, executing cool aerials -- is too addictive to give up, even though Peter knows Spider-Man is wrecking his life.

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Alfred Molina, right, plays Dr. Otto Octavius, who shuttles around town using robotic, serpentine arms after muffing an experiment.

leaves viewers hanging and wanting more -- there's even a teaser for Spider-Man 3, coming to theaters in 2007.

James Franco, right, plays one of Spidey's enemies.

Spidey is ruining Peter's life -- he's failing school, can't hold down a job and has alienated his friends. But Peter can't kick his habit -- the spider suit is just too exhilarating.

is the most effective superhero film ever, largely because the audience gets a taste of Spidey's power.

Kirsten Dunst stars as Peter Parker's would-be girlfriend, Mary Jane Watson.