Dragon Ball Z
.BEJIITA . A moody, taciturn, cocky, powerful,
and the last prince of a one fearsome warrior race.
.GOKUU. happy go lucky, light hearted,
earth raised saiyajin that quickly sheds his laughter and smiles
when his friends, family, and life are threatened.
When I first started watching DBZ /GT I had no clue what YAOI was, so I didn't see the characters that way. But after watching some episodes and movies a little more closely, I see possible Yaoi-ness between these two. At a quick glance it just looks as if they're just fighting comrades who eventually admire each others skill, Bejiita especially. But it's not as cut and dry as that. They evidence points for these two grew so numerous I had to break them up into categories.
Buu/Vejitto Saga Evidence
Majin Bejiita Saga
Various Sagas
DBGT Evidence
Movies Evidence
Other Evidence
Did I leave something out?
Let me know