I had the best mocha of my life at a coffeehouse I stumbled into in the Valley and for the life of me can't remember the name or location.
I think it is toward the east end of Encino, within 1/2 mile of Ventura Blvd, on a street that I believe parallels Ventura. Perhaps close to Magnolia.
Its name did not have coffee or cafe in it, I believe. It had lots of fairly bad amateur art lining the walls, a selection of pastries...
I know this is not a lot to go on, but I am counting on you chowhounds!