The bands I have seen live:

[djdeastva]

Reveille: 4 times
Ill Nino: 3 times
Otep: 3 times
Deftones: 2 times
Hatebreed: 2 times
Sevendust: 2 times
Flaw: 2 times
40 Below Summer: 1 time
Kittie: 1 time
Lacuna Coil: 1 time
Bleeding Through: 1 time
Atreyu: 1 time
Darkest Hour: 1 time
Throwdown: 1 time
Skinlab: 1 time
Devildriver: 1 time
God Forbid: 1 time
Unearth: 1 time
Magna Fi: 1 time
Slipknot: 1 time
Dimmu Borgir: 1 time
Ra: 1 time
Pulse Ultra: 1 time
Switched: 1 time
Glassjaw: 1 time
Seether: 1 time
Mushroomhead: 1 time
Used: 1 time
Neurotica: 1 time
The Apex Theory: 1 time
Chevelle: 1 time
Meshuggah: 1 time
Down: 1 time
Lostprophets: 1 time
Black Label Society: 1 time
Adema: 1 time
P.O.D.: 1 time
Rob Zombie: 1 time
System Of A Down: 1 time
Ozzy Osbourne: 1 time

(I am forgetting atleast 20, I remember several all day events of which I remember 0 bands)