I agree with working in restaurants. The coffee shops near me that have wifi are full of telecommuters gaming for the tables with power outlets. For some reason I find it way more distracting to be surrounded by other remote employees oogling their laptops than I do people eating or drinking coffee.

In my area there are a few restaraunt/bars however that have great wifi, few remote employees, food that isn't scones, and better music. Also, they're completely dead in between meal times so no one minds if I hang out from noon to 4pm.