Fun subversion of the self insert fic genre. One of the authors, who was genuinely unfamiliar with the series at the time, wrote the actions of the pseudo-Author Avatar
Skyler Sands, while the other wrote the rest of the fic around him. Acting out of true ignorance, Skyler manages to thread his way through the main action while still ranging far afield (such as ending up joining the Shadow Girls' avante-garde theatre group). Skillful execution on the parts of its authors — and ignorant yet Genre Savvy
Skyler — make this an entertaining read. Sadly it's (everybody in chorus now) a Dead Fic
, abandoned nearly ten years ago. Even so, there's about half a megabyte of inspired work there.