Isotope Comics - San Francisco - Yelp
http://www.yelp.com/biz/lpMhwPqMq493Aphf6FezUA?flow=search&src_adid=G-Q1KvqbH-tm8nw8jDBMKA
"The Isotope is the first of its kind, combining a comic store, an original comic art gallery, an active workshop/meeting place for creative individuals, and a relaxing get-away from the pressures of life."