Stuff I've been shoving my face into lately:

>In Flames
>Soilwork
>Disarmonia Mundi
>Killswitch Engage
>Diecast
>Trivium
>All That Remains
>As I lay Dying
>Children of Bodom
>Amon Amarth

If you like Metallica, Iron Maiden, Megadeth, Judas Priest, etc. and are looking for something heavier, yet at the same time still melodic, these are all worth checking out.