You might be surprised at how difficult it is to find good coffee in San Francisco, especially if your local colleagues and friends are happy with Starbucks!
If you're out of recommendations, try the San Francisco's Best Coffee iPhone app.
Need an immediate fix? The GPS function will show you exactly where the nearest cafe is.
For coffee aficionados, the app details the type of bean, grinder and machine, plus more immediately practical information like opening hours, maps, phone number and a website link. It also handily gives you a picture of what the place looks like from the outside.
Do-it-yourselfers will appreciate the map integration too: the app gives you the location of roasteries as well as coffee shops so you can pick up beans instead of (or in addition to) your cup of coffee.