Google Maps for Android just updated with two awesome features that make phone calls and navigation just a tap away. Here's how to enable them.
To enable the Bubble Buttons lab, just head into Google Maps and go to Menu > More > Labs. Scroll down to "Bubble Buttons" and tap it to turn it on. Now, whenever you search for a location in Maps, you'll have the option to call them or navigate there right on the main map page, severely reducing the number of taps it takes to perform either action. Head to the Android Market to update your version of Maps and try it out for yourself.