Window throwing in OS X and Ubuntu
When I first switched from OS X to Ubuntu for my daily development work, one of the things I missed a lot was Divvy.
“Window throwing” is the purpose of Divvy (and Spectacle, which I later replaced it with). With a single keyboard shortcut, I can make the foreground window fill the right half of the screen. Or the left half. Or the bottom right quadrant. Or the whole screen. Any rectangle I care to define. I can even send it to the other monitor.