If you're interested in Melodeath, check at least some of these out.
Scar Symmetry (Recommended)
Solution .45 (Recommended)
Soilwork (Recommended)
In Flames (Recommended)
Zonaria
Archeon
Kalmah (Recommended)
Skyfire
Threat Signal
Raintime
MyGra1n
Norther
Noumena
Carcass
Shade Empire
Mors Principum Est (Recommended)
Dark Tranquility
Before The Dawn (Recommended)
Children Of Bodom (Recommended)
Naildown (Recommended)
Blood Stain Child
Catamenia
Disarmornia Mundi
Imperanon
Cadacross
Tracedawn
Omnium Gatherum
Wintersun (Recommended)
At The Gates
Kotiteollisuus
Mokoma
Zonaria
Disarmonia Mundi
Eternal Tears of Sorrow (Recommended)
...and I think that's enough for a start! : )