My department covers tuition, fees, etc. and "guarantees 5 years of funding" - so long as you are willing to teach. My stipend for teaching this year was ca. $22k for the fall and spring semesters combined, and a little more if I were to teach in the summer. Because I am an out-of-state student, the department covers my out-of-state tuition and fees the first year, and I am required to take all necessary measures to establish residency by the second year, else I am responsible for covering the extra amount for out-of-state. We also get a decent health/dental plan (Anthem Blue Cross, I believe).
I'm in the life sciences at Berkeley.