There are quite a few good restaurants in Petaluma. I used to live there, and the number has grown since I moved, but some reliable favorites are Dempsey's Alehouse (not just brewpub grub!), the New Yorker Pizza (for the thin crust fans), Old Chicago Pizza (for the thick crust with 3 lbs of cheese fans) and Volpi's (pasta and they have a former speakeasy in the back).