Kevin Hart is one of America's most popular comedians, but he didn't reach such a lofty status overnight. Using humor to get through a tough inner-city childhood, he later paid his dues in comedy clubs. After being cast by Judd Apatow for a few episodes of his short-lived cult-favorite TV show "Undeclared" (Fox, 2001-02), Hart began to pick up career momentum, with small parts in films such as the horror spoof "Scary Movie 3" (2003) soon giving way to bigger roles in feature comedies, including the unabashedly campy "Soul Plane" (2004). Turning up in more Apatow productions and other parody flicks (2008's "Superhero Movie"), Hart finally had a breakout performance in the hit ensemble romantic comedy "Think Like a Man" (2012). By this point, thanks largely to his legion of viral-video fans, his stand-up-comedy career followed suit, with his "Laugh at My Pain" tour and concert film proving to be a huge success that made him an undeniably bankable name.