Bad Religion
Fenix TX
Blink 182
Allister x 4
Plain White T's x 3 (and I put on two shows for them in high school)
Less Than Jake x 6
Thrice x 3
Midtown x 4
Fall Out Boy x 4
The Movielife x 4
Sugarcult
The Ataris
Taking Back Sunday x 4
Box Car Racer
H20
Rise Against
Sum 41
The Starting Line x 5
Riddlin Kids x 2
Alkaline Trio x 3
Against Me!
Green Day x 2
Jimmy Eat World x 2
Comeback Kid x 2
Avenged Sevenfold
Brand New x 4
Face to Face
Lucky Boys Confusion x 4
Hot Water Music
Northstar
Thursday
Say Anything x 2
Straylight Run

That's all I can think of, plus a bunch more local bands or smaller opening bands. Wow, I saw a shit ton of pop punk shows in high school.