I'm just gonna rec this over here on IJ, because I think everyone on the LJ side of fandom has read it already, but if you haven't, one of my absolute favorite authors has written one of the loveliest schmoopiest sweetest J2 fics ever.

Spin the Light into Gold by belyste. Make sure you've got a big chunk of time free to read it because it was written for big bang. The art is pretty fabulous too.