So there's only two people on my flist who seem to write Mark/Derek and I don't believe you two know each other.

holycitygirl meet kho! kho meet holycitygirl

holycitygirl wrote this fabulous Mark/Derek fic here, Tired, set after "Six Days, Part 2."

And kho wrote a marvelous Mark, Derek (non-shippy) fic, In That Moment, about that one moment in "Drowning on Dry Land."

And can you believe it, I couldn't find a single Mark/Derek comm out there! *nudges you both*