"Most male/female duets really make me wish the bloke had just shut his wee giggy*, but I really like both vocalists in Shelleyan Orphan."
Example: Spirogyra, though the bloke's voice grows on you somewhat. I think the problem is Barbara Gaskin is in possession of such a deliciously fine set of chords, you wonder why anyone else would want to nab the microphone off her.