Sonoma Coffee Cafe
2131 Durant Ave
Berkeley, CA 94704 USA
Although a decent trek from my (now ex-)grad school building, I do wish this cafe had existed a few years ago. The coffee was fine, and the environment was great. Not over-crowded during finals, but still enough bustle to be conducive for working.
And they have a poetry corner with some posted work. WOO-HOO! That's a review bumper.