I know several. One of which I book musicians. The first link is the one I'm involved with. Scroll dow a bit and you'll see the up coming performers.
Adrien

http://sites.google.com/site/cafenamasthe/Home

http://www.sidedoorcoffeehouse.com/aboutsdch.cfm

http://www.yellowdoor.org/coffeehouse.html

Hope this helps a bit.