Just how dark and tangled a web will MJ's superhero beau weave in Spider-Man 3, due out in May 2007? "You can see on the poster that it's literally black!" Kirsten Dunst told TVGuide.com at a press gathering for Marie Antoinette (in theaters Friday). Not only does the franchise's third entry - which features the introduction of Venom, Spidey's black-goo-based polar opposite - promise to be the grittiest, it might even bring Peter Parker's blockbuster big-screen adventure to a close. "We're not sure [if this is the final entry]," Dunst said. "Might be, might not be. But it's always been something I can [do] when it's coming up, so it's weird that it maybe won't be part of my life anymore."