I don't remember most of the movies, so I'll just make a list of all the boy x boy movies that I've watched. I'll put a * beside the movies that I think are extra good.
Korea
Antique Bakery*
A Frozen Flower
Japan
Ai No Kotodama*
Itsuka no kimi e
Boys Love
Soshite, Harukaze ni Sasayaite*
Hong Kong
Amphetamine (this one is very dark with a lot of nudity, I didn't like it)
Taiwan
Go! Go! G-Boys