Aerosmith "Toys in the Attic" tour; Jethro Tull; Emerson, Lake and Palmer; Yes (when Wakeman was still with them on keyboards, I sill love his version of Starship Trooper. In a keyboard throw down I would have to take Wakeman over Keith Emerson though), and the one time that Peter Gabriel came back to Atlanta in the 90's (after a bad reception with Genesis in the 70's made him say never again). ELP was the first date I took my future wife on in 1976.
Hard to pick a favorite though. Have not been to one in a while. Life sort of gets in the way sometimes.