Android phones, apps and tablets

fuckabout. Any more of these? keep em coming people

Zoom in and out with one finger, in G Maps for example:

Double tap screen but keep the finger on the screen with the second tap. Then slide vertically up or down to zoom. You can also "throw" the motion to do a big zoom change.

Super useful for zooming out and has the added bonus of not changing the centering of the map.