Let's see... ones that have hints of canon (and this is only keeping to the het):
Ichigo/Rukia
Ichigo/Orihime
Ishida/Orihime
Urahara/Yoruichi
Renji/Rukia
Gin/Matsumoto
Hitsugaya/Hinamori
Aizen/Hinamori (I guess)
Jinta/Yuzu (lol so cute)
Shunsui/Nanao (I love these two)
Ishida/Nemu (perhaps)

Then there are the slash pairings, and the crack... far too many. XDXD

Yes lol