Is your hard drive getting full? The first thing you will probably do, is to delete movies, downloaded applications, etc., to free up some precious storage.
You can also use a disk cleaner application like CCleaner, to free up some space used by commonly used programs such as your browser’s disk cache, WinZip etc.
But what if you have done that, and you find that your hard drive is still quite full? The obvious option, and a very tedious task, is to manually check each and every folder, to narrow down to the one which is the mammoth. This requires a lot of time and manual effort if you have hundreds of folders and dozens of applications and games.