McMahon gained significant traction when he hired American Wrestling Association (AWA) talent Hulk Hogan, who had achieved popularity outside of wrestling, notably for his appearance in the film "Rocky III". McMahon signed Roddy Piper as Hogan's rival, and then shortly afterward Jesse Ventura as an announcer. Other wrestlers joined the roster, such as Jimmy Snuka, Don Muraco, The Iron Sheik, Nikolai Volkoff, Junkyard Dog, Paul Orndorff, Greg Valentine, and Ricky Steamboat. Many of the wrestlers who would later join the WWF were former AWA or NWA talent.