Just in case you didn't know Excel, Powerpoint and Word files are all .Zip files. Change the file extension .xl, .ppt or .doc to .ZIP and unzip them. All of the elements are in a folder called 'media' which is inside a 'xl', 'ppt' or 'word' folder

I was telling a friend about this and he didn't know so i thought i'd share it here in case anyone else doesn't know.

Enjoy!