Here's a songfic with a twist. Inside the mind of Barty Crouch.
This is in response to Eggplant's fic The good, bad, and ugly. Its's about the end of book 7. Don't read unless you're crazy.
What do I see when I look in the mirror of erised?
Harry Potter and the gang meet a Mary-Sue. Be forewarned I am insane and disturbed.