Manga recommendation: I.D.
I love it when my obsessions collide (ie. yaoi + csi-ish plot). LOL, maybe yaoi doesnt normally have a plot but it has to do with a hot DNA lab tech that has the hots for the new rookie on a specialised crime fighting team and who loves collecting DNA in his own special way (this is yaoi, so you get the picture)
http://www.mangafox.com/manga/i_d/