If you use Windows and a large monitor WinSplit Revolution is a handy tool. It easily allows tiling of windows using the ctrl + alt + number cobination. It uses the fact the number pad is of somewhat similar shape to a screen. You can find more at the programs website. This reminds me of using nvidia grid lines but it is far more user friendly. It is not as powerful as some tile based X11 window managers such as wmii and xmonad. Then again it is not a window manager.