KDE and Windows7 both have a nice feature that lets you maximize a window to half the screen by dragging it to the left or right screen edge. Does Gnome have anything similar?
Edit: The feature is called Aero Snap in Windows 7.
Found the answer. At this time there are basically two ways to implement it:
The hacks require modifying Compiz with custom commands or scripts.
2 - Use the Compiz Grid extension
Then enable Grid in the Compiz Settings Manager -> Window Management.
Grid uses modifier key + numpad to position windows around the screen, so it is not exactly aero snap, but is easier to implement, and works well.