"... your daily tasks at your fingerprints."
Taskie at Android Market
Taskie is a gesture-based task manager for your Android phone. It establishes a virtual gesture area at the bottom of your phone's screen.
Whenever you slide it left or right you switch between your recent tasks. It also recognizes double tap and long press which may bring up your home or system settings. Taskie is ideal if you work with two or more apps and you like to switch between them instantly.
For example reading a Wikipedia page and taking notes in a different app. Moreover with Taskie you don't need to use your home button but rather get home with a gesture.