I've read that Ali vs. Inoki had great promotion and it did a stellar job at the box office in Japan, but the match sucked because Inoki was restricted on how he could work his offensive wrestling holds with Ali.
Actually, here's a video review of the match:
Ali also famously played a memorable role in the first WrestleMania and only added to all of the star power the Federation stacked that card with and made it such a successful event. Ali even made an appearance in WCW in the 90s. The man was obviously a fan of the business and if any of you saw the Legends Of Wrestling roundtable discussion on the topic of "The Celebrity Effect" on WWE Classics On Demand, Piper had plenty of kind words for Ali and even a cool story of Ali letting him shine at a live event back in the 80s.