Albums? Here are some suggestions.

Hypocrisy: Virus.
Dream Theater: Awake.
Fear Factory: Archetype.
Agalloch: The Mantle.
Chimaira: The Impossibility of Reason.

Those are some great albums worth recommending for a start. Hypocrisy is pretty heavy, but had some great tunes. Dream Theater is softer but James LaBrie has a kickass voice. Archetype is Fear Factory's best album, in my opinion. Agalloch are wonderful and Chimaria are heavy but not to everyones' taste.