Author has written 2 stories for Harry Potter, and Stargate: SG-1.
I may be a bit old to be a Harry Potter fan, but I am, so there. I found it to be fun light reading, that is untill I read Half Blood Prince and Deathly Hallows. HBP wasn't too bad, but DH was terrible. That's just my opinion. I remember telling my girlfriend, "I've read better fanfiction." Not to say the fanfictions were bad, just better than JKR's Hallows.
Anyhow, I'm about to start a fiction inspired by all those wonderful fansfictions out there. Be prepared for a bit of fun and excitement. Hopefully you will read and enjoy my ramblings.