1. You download a program that you cant delete .
see example in this article here Clicky

2. You want to customize your windows settings

Example: you want a custom boot logo when you restart your computer these files are normally a .MUI file

3. Create custom themes make your Windows computer look like a mac or Windows xp look like Vista

4. To Delete Spyware , Viruses or Malware that is undeletable
(not sometime you have to make file visible)

5. Other Cool Windows Customizations !

Check out these other threads I did about taking ownership of files in windows:
http://geekdrop.com/content/create-take-ownership-in-windows-right-click-menu
http://geekdrop.com/content/take-ownership-of-file

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