The Sierra Art Foundation’s Gallery has an actual Banksy on exhibit for free through next month. The “Catch Banksy” exhibit, which is a play on the artist who no one ever seems to be able to catch in the act, features the “Haight Street Rat,” which was painted on the side of a building in San Francisco, and removed by Brian Grief, a Bay Area art collector.  Sierra Art’s gallery is located at 17 South Virginia Street, and the Banksy is on exhibit through October 17th.