Black Knight (2001)

Fast-talking con-man Jamal Walker has big-time plans--but for now he's stuck in a menial job at a medieval theme park. After slipping into the park's fetid "moat," Jamal finds himself in 14th century England--a world of knights in shining armor, a wicked king and damsels in distress. The Middle Ages will never be the same after Jamal uses his 21st century street smarts and attitude to help a down-and-out knight and a beautiful woman defeat an evil king.