Lets see,

Aerosmith 4 times
Garth Brooks
Alan Jackson/Deana Carter
Travis Tritt/Trisha Yearwood/Little Texas
Brother Cain
Bad Company
Lynnrd Skynnrd
George Strait
Clay Walker
Chely Wright
Teri Clark
Hank Williams Jr
Arron Tippin
John Denver (yes I was young and had no choice)

Want to see

Elton John/Billy Joel...got tickets for Feb in Dallas!!!!
Journey
Diamond Rio
Pat Green (Texas artist)
Garth Brooks (again)
Matchbox 20
3 Doors Down
Dave Matthews Band!!!