Program Killer is the best way to terminate hanging applications. Killing them by closing is inefficiently, killing by Task Manager gets too much time, killing with help of Program Killer is quick and easy.
We call this method "Click'n'Kill". Program Killer is in the tray awaiting for your command. After you press configurable shortcut (or left mouse click on tray, or right mouse click on tray and select "Kill" item) it lets you to click on program and after that this program's process is immediately terminated.