It MUST sound suspicious, but I've watched couple yaoi/shounenai-animes (mainly OAVs) with my sis who loves yaoi/shounenai (I'm a guy). From the expression I've gotten from her the
K-I-N-G of bishie-yaoi guys is Iason Mink from Ai no Kusabi (I haven't seen it and probably don't bother). So... if there're any of those drooling bishie-hunter out there reading this search
Ai no Kusabi