Rise Against - inspirational lyrics coupled with melodic guitars and a hardcore punch in the bass and drums. fantastical punk rock
SOJA - reggae with a message. lots of melody and background vocs. guitars overlayed on lots of the tracks sound almost latin, but they retain the rasta-vibe sound
The Ataris - awesome variety of sound, from emo as shit, to social commentary, to party songs. earlier stuff is the epidomy of "basement show pop punk"