Neve Campbell is hitting new heights, due to her new film Skyscraper. But, once the 44-year-old actress appeared on The Late Show last night to promote the movie (opposite Dwayne Johnson), sponsor Stephen Colbert couldn't help but wonder why she had not starred in more blockbusters in the last decade. "Everybody understands you out of Party of Five, The Craft, four Scream films, Season 4 of House of Cards. Ten years back, you had the world on a string--cover of Rolling Stone, hosting Saturday Night Live. And then you left! You moved to London. Why not like usNeve Campbell?" Colbert asked. "Why did you leave America?" "I just needed a moment," Campbell explained, laughing. "It was a very long moment. It was a good minute." Born and raised in Ontario,'' Campbell said she had no idea how Hollywood worked before she got into show business. "I simply didn't understand American pop culture at all," she admitted. "And t...