Drumming Project for school

So in my band class we have to do a project on something musical. I'm writing on how the drum set parts in two or three songs contribute to the overall mood that the listener experiances. My three songs I've choosen are Ticks and Leeches by Tool, The Dreaming Tree by Dave Matthews Band and Breaking the Girl by RHCP but I've got that one down seeing how its just one beat the whole way through. I've got a good start but I would really appreciate your guys' thoughts on the subject. Here are the songs...

http://www.youtube.com/watch?v=RelR85j09XY

http://www.youtube.com/watch?v=_mIWg9Ei_rI