Black Sabbath and Judas Priest on the same bill
Black Sabbath and Iron Maiden on the same bill
Bruce Dickinson on the Accident of Birth tour back in 1997. It was my first time seeing Bruce and he played 4 Maiden songs, Two Minutes to Midnight, Powerslave, Flight Of Icarus and ended the show with The Prisoner. Still one of my favorite shows of all time. Best part is I paid $7 for the ticket to see this show.
I forget what year it was but I got to see Mastodon open up for Gwar during the Remission tour. It was a 5 band bill and they were either the 2nd or 3rd band on. I had no clue who they were but I was really impressed by them, at times they sounded like a train wreck and at times awesome. Since I had no clue who they where I had no clue about any of the songs but there was one song stuck out that night that made me love this band. That song I later found out was called March Of The Fire Ants