Ding, ding, ding!
Holy Smoke
1. dunno
2. Ozzy Osbourne had song called "Miracle Man" written about Jimmy Swaggart on his album "No Rest For The Wicked" released in 1988. Holy Smoke was written about many televangelist scandals in USA and particularly about Swaggart as he's mentioned in the lyrics as Jimmy The Reptile.
I didn't check any other tours, festivals or concerts but Iron Maiden participated with Ozzy on Ozzfest-tour in 2005.
3. Live-recording (Wembley Arena, London, England, 17 December 1990) was released on b-side of "Wasting Love"-single.