Butterflies & Hurricanes: simply because of really strong lyrics. "You've got to be the best, You've got to change the world and use this chance to be heard."
Knights of Cydonia: lyrics are...............so GOOD. This song makes me fight against this stupid system. It makes me much stronger than I really am.
Falling Away With You: reminds me a lot of things. Pure awesomeness this song is.
Invincible: yeah, I do love that song. When I'm feeling down, I want someone to sing this to me, so I usually choose Matt. Helps a lot.
Take A Bow: I dunno how to explain the feeling I get when I listen to this song. Something weird. I love it.
Citizen Erased: made me think about a lot of things. The chorus hits me everytime. This song is a monster.
Also, Bliss, Time Is Running Out ("I won't let you bury it, I won't let you smother it, I won't let you murder it"), Stockholm Syndrome, Space Dementia, Muscle Museum, Uprising, United States of Eurasia, In Your World mean so much to me. There are too many.