I just bought Zooom/2, a nifty little utility to move, resize or refocus to another window without a click. According Coderage Software, the new version, 2.2.0, adds window edge snapping, enhanced control of Magnetics feature, an improved information overflow window, a clearer UI, Ignore list improvements and meaningful performance changes…
Also from their site:
What is Zooom/2?
Tired of hunting for the title bar in order to move a window? Do you want a slicker user experience? Try Zooom/2 – and find out what your missing!Zooom/2 provides you the ability to work with any application window using keyboard shortcuts and the mouse to move, resize and zoom your windows incredibly quickly.
No longer do you have to exactly pick out the grow-area (bottom right) of a window – you can resize any window by holding a shortcut key and then dragging your mouse around anywhere inside it.
Zooom/2 functionality relies on the Apple Accessibility API. A large percentage of applications support this automatically – but some do not, please see the Compatibility page for more information.
