Oneiroi and Hephaestus is gooood - and I don't even ship Hotch/Reid. LOL
Characterization is really good and the plot is very interesting. Nice blending of both 'verses and really makes it work.

And I love the School Daze story.

I've recently been reading amichevole's stories. Some gen, some slash, some femeslash. Of those that I've read so far, all are pretty intense and even though tend to be character studies, have interesting casefic to get that across.
The very first post on that journal lists all the fics there and a brief summary and then links to each story.