The Windows 7 Command Prompt now supports drag & drop of files. This means that to enter the destination of any file you can just drag & drop it into the command prompt window.
This small feature is not so useful for most users, but for those who work frequently in Windows command prompt, this is a lifesaver.
Sadly this drag & drop functionality is only for files and does not apply with some text commands which you might need to copy/paste in the command prompt quickly. Whether the files are executable, text files, documents, or whatever, they can now all be dragged and dropped into the command prompt.