If you are in the Bay Area check out Hacker Dojo in Mountain View. If you want, you can think of it as a coffee shop with

1) Free coffee. Open 24 hours.

2) Screens you can hook up if needed.

3) Other coffee drinkers who also hack.

4) Very fast internet connection.

5) Happy hour on Friday, when you need to lose the caffeine edge.

Guests are welcome. There is a box for voluntary suggested donation. Membership is $100 per month. Remember the "no free cup of coffee" theorem. :)