A) When you have a Microsoft Word document you need to edit but only have access to OpenOffice or WordPad.
B) When you need to edit Microsoft Word 2007 documents but only have access to Word 2003 (and no way to download the stupid compatibility pack).
(Dude 1) Dude, how am I supposed to edit this, it's a file full of windings!
(Dude 2) Gotta love it. Microsoft Wordjacked.