I'm a huge music addict, and addiction is just a nice way to put it. I have so much music,and yes I have heard most of it. Here's a list of bands I like, strangely enough I switch between the dark and heavy to the light and sweet, not sure how that happens.

In order of favorites:
Bullet for My Valentine
In Flames
Children of Bodom
Dark Tranquility
Blue October
The Starting Line

Here's the rest no order I'll post more as I remember:
Sonata Arctica
Kamelot
HIM
Chimara
Arch Enemy
Dir en Grey
Pain
Three Days Grace
Seether
Mudvayne
Papa Roach
Pain of Salvation
Pantera
Incubus
Epica
Nightwish
Opeth
Otep
so on...