Black Knight2001 - 2001

Martin Lawrence plays Jamal, an employee in Medieval World amusement park. After sustaining a blow to the head, he awakens to find himself in 14th century England.
Jamal, a low-level worker at a shabby amusement park with a medieval theme, finds himself sent back to the year 1328 after he falls in the moat. Before he realizes what has happened, he finds himself mistaken for a messenger from Normandy, enlisted in a plot to kill the tyrant king, and preparing to open a chain of fast-food restaurants, not to mention falling in love with the leader of the assassination plan. Jamal Walker is a bumbling African-American loser with a lousy job at a crummy theme park called Medieval World, which is receiving heavy competition from a superior stadium with a similar theme, Castle World. Jamal's pathetic life, however, is dramatically altered while cleaning the stagnant moat. He finds a medallion in the moat, and while trying to pull it from its spot gets sucked into a vortex after an apparent knock on the head.