Pretty much the entire album "The Black Halo" by Kamelot. That and the album "Character" by Dark Tranquillity
"The Black Halo" by Kamelot had some songs on it that really reached out and touched me when I needed it. Tracks like "Soul Society", "Abandoned", "Moonlight," "Memento Mori", and the title track "The Black Halo" itself. This is an album that I've let people listen to, and their opinion about Metal has been changed forever. If you're one of those people that thinks metal is talentless, screaming, angst ridden garbage, look this album up. I recommend this album/band to anybody that likes anything with electric guitar.
The other album, "Character" is significantly louder and heavier than the previous. The vocals are growled, and it's got a more aggressive sound to it. That doesn't necessarily mean that it's talentless, screaming, angst ridden garbage either. It's screamed, yeah, but that's a worthless drop in the bucket to me. The songs "Lost to Apathy", "Mind Matters", "Am I 1?" and "My Negation" are the tracks that really got to me off of this album, more than the others.
Dark Tranquillity definitely isn't a band I'd suggest to everybody, simply because of the vocal styling. If you're able to look past the growled vocals and distorted guitars, though... there's some cool, meaningful stuff here (to me, anyway).
Dark Tranquillity and Kamelot are easily my two favorite musical acts. Honorable mentions to Opeth with the "Damnation" album, ShamRain with "Goodbye to all That" and to Paradise Lost with "Draconian Times".