This is by far one of the best songs off Ænima.

[I Feed On Life]

I admit, this used to be one of my least favorite Tool songs, and my least favorite off of Ænima...but then one day it hit me, and I listen to it about 5 times a day. It's so varied, and has such an amazing build up and beautiful vocal delivery - you always know something is going to happen, but not when, and the riffage feels like I'm getting hit with a wet blanket and the ending is orgasmic to say the least. It's so mysterious, so intriguing. Such an underrated tune, IMO.