Perfect Hotkey lets you add keyboard shortcuts (hotkeys) to any files or Windows programs. You can also set the program to open and close optical drives, shutdown or sleep the computer, change the volume, etc. You may also request a new feature from the developer using the program itself.
WinUtilities Duplicate File Finder is a utility that identifies duplicate files in one or more paths. scan can be defined by path, file mask(s), and (optionally) with complex filters for size/date/attributes.