I'd have to say that my favorite yuri pairing is (red) Alice and (white) Alice, but any pairing with Alice from PH is from favorite! (such as Echo and Alice, Sharon and Alice, etc. ) Sadly, though there isn't much yuri fans of Pandora Hearts (can't forget Ada and Charlotte! : D ) and the lack of yuri AMVs is almost sad, but at least there is yuri fan art to keep me happy along with some yuri official art! xD
However, I did find this somewhat yuri abridged sort of thing for PH! : D
Sort of Yuri PH abridgedHowever, I did find a whole bunch of PH yuri doujinshis and fan art! >;3