Kate Hudson's loss was Kirsten Dunst's biggest gain of her young career. According to various reports, Hudson turned down an offer to play Mary Jane Watson to Tobey Maguire's Peter Parker in the 2002 superhero film "Spider-Man." Dunst stepped in, and the rest was history. But just in case you forgot, the film became an international blockbuster sensation, launching a successful franchise and securing Dunst future work. Reviewers noted that Dunst and Maguire's on-screen chemistry was palpable. So it wasn't exactly a surprise that the two became entangled in a relationship off the set.