Yeah, I read some great yaoi manga's and have seen only one anime.
Gravitation was awesome!! That would be the anime I watched, people tell me that it is even better in manga form.
Eerie Queerie and Legal Drug are my picks for manga.
Also I've heard that some other good ones are Fake, Get Backers, Only the Ring Finger Knows....etc etc
There's tons out there. I mean you can type yaoi in amazon and come up with a list!
bl = boy love
male/male relationships
yaoi
etc.
gravitation is a great anime, though short, but very good. hmm...i can't say i've actually seen any other m/m shows [though if you watch any anime close enough theres always some type of 'close' relationship between characters of the same sex]. and depending what you like, you can find anything on the internet. almost any show you've watched, people have extended the series in their own way. you name it: gundam wing, dbz, ronin warriors, sailormoon, gravitation, etc. people have made their own stories with the shows characters and put together something that they wanted. [havent you ever seen a show where you wish some character was with another character or that something was more detailed?]. its very interesting to see what people come up with, even i've written stories with 2 of my favorite characters in it [it's fun]. anyway...if you want some interesting stories of gundam wing (m/m) i can give you some of them, just pm me 😉
sry that i wrote so much [lol]