I haven't been able to find any, and a friend who really likes 'em is coming into town for the weekend (and I also like them myself).
I'm a little ways East of Balboa Park (North Park/City Heights), so if anyone knows of anywhere near there, bonus points.
(Also, for any PBR lovers in the area--the Blue Foot Bar and Lounge at 30th and Upas has $2 PBR on tap all the time. A better non-Happy Hour deal in the area I have yet to find.)