Movies about pro-wrestling seldom star actual pro wrestlers. Instead we get Mickey Rourke ("The Wrestler") or Ryuta Sato ("Gachi Boy: Wrestling with a Memory"). But the ascent to Hollywood stardom of Dwayne Johnson, who wrestled professionally as "The Rock," has inspired New Japan Pro-Wrestling, Japan's biggest pro-wrestling organization, to do something similar for NJPW star Hiroshi Tanahashi.