meh i've got a musicians block..even though i don't make music. anyway i need songs for my Zen (mp3) and i want your suggestions on good songs.

here are some of the categories i would like.
i would like them to vary around

trivium
underoath
jimmy eat world
deftones
system of a down
rise against
apocalyptica/ chase & Status (instrumentals)

and as you can tell those are mostly rock but i am flexible on songs so maybe some you would call your favorite or something but please..NO IRON MAIDEN