This list isn't the most sorted. I swear I suffer from multiple personality disorder with all the roleplaying I do, so, my most emotional characters are usually the ones with the most songs dedicated toward them. I listen to rock - anything from alternative to metal-rock. If you recognize any of these groups or songs - you may be interested in checking out some of the others I like. xD I did not repeat any artists/groups in this list.

what - by whom, recent and constant favorites
Always - Saliva
Reborn - Stone Sour
Inside of You, In Spite of You - ThouShaltNot
The Pretender - Foo Fighters
Endless Dark - H.I.M.
What Lies Beneath - Breaking Benjamin
Welcome to the Family - Avenged Sevenfold
Serpentine - Disturbed (although there's no such thing as a bad Disturbed song)
Praise - Sevendust
Take Back the Fear - Hail the Villain (new group, Canadian - gonna go real far, I foresee)
I Hate You - Sick Puppies
My Obsession - Skillet (as great as their newer stuff is - try out their earlier stuff)
Sad But True - Metallica
Before I Forget - Slipknot
Stay in Shadow - Finger Eleven
Collapse (Post-Amerika) - Rise Against
Paperthin Hymn - Anberlin
If I Had You - Adam Lambert (lol)
Lead Us Home - Demon Hunter

other good songs for various reasons
Reminded - Drowning Pool
Control - Puddle of Mudd
Scum of the Earth - Dragula
Remember the Name - Fort Minor
What Comes Around - Ill Niño
Young - Hollywood Undead
Bitch - Dope
In The End Demo - Linkin Park (the demo has way more lyrics, give it a listen!)
Alla som inte tankar - Mollgan (från Middlesex) (a Swedish song about The Pirate Bay.... eh, haha...)
Famous Last Words - My Chemical Romance
You're Gonna Go Far, Kid - The Offspring
They All Fall Down - SR-71
Attack - 30 Seconds to Mars
Hollow - Submersed
Phenomenon - Thousand Foot Krutch
Now or Never - Three Days Grace (try their older stuff, new stuff is good, too, but old stuff has a different flavor)
Made of Glass - Trapt
The Bird and the Worm - The Used
On The Way Down - Ryan Cabrera
Houses of Cards - Zeromancer
Living in A World Without You - The Rasmus

female artists
Anything For You - Evanescence
Unbreakable - Firelight
Split Personality - Pink
All About Us - t.A.T.u
What Have You Done - Within Temptation Ft. Keith Caputo
Lacrimosa - Sweetbox