Two recs passed along from lady-ganesh:

There's No Rainbow Bridge Across the Generation Gap is a non-smut fic about Loki and his kids (of Norse mythology). It is deeply, deeply awesome and you need to read it ( Read more... )

Michaelangelo/Silver Sentry. The mind boggles! (Not as boggly as Splinter/Usagi and Raphael/Traximus though. Sry.)

Speaking of crack, Ship of Fools updated. Go read!

All Edge, No Middle by Dee (the Australian Dee). (This was posted on turtlecest but I'm going to assume the majority of you aren't following that comm.) It is about Raph and Leo, but it is not smutty at all. But it is great!