I used to participate in the predecessor exchange, crossovering, which was a lot of fun. I'm still deciding whether I want to do this one, given the extra time required to review two canons, but I do love crossovers.
Additional exchanges/challenges/etc. coming up, for my own records:
* Rarest of Rare This entry was originally posted at https://skieswideopen.dreamwidth.org/259173.html, where it has comments. Comments are equally welcome on either entry.