Ok, the pairnings I have read and absolutely hated:
Dubledore X Hagrid
Petunia X Harry
Jou X Yugi-I really don't hate this one, I just don't like it... DON'T KILL ME JOU x YUGI LOVERS!
Eragorn X Gimli
The Shounen Ai and Yaoi Guild
A Guild dedicated to discussing Yaoi and Boy Love.