I'll see Sopho's dislike for church organs and raise you one HATE church organs. Also not fond of electric guitars, but particularly dislike most of the old hollow-bodies like the Les Pauls. And it's pretty rare that I hear a penny whistle that doesn't annoy the hell out of me.

Other than those and a few (far from all) Asian and African instruments, I can't think of any I don't like if they're played well. I even love good jugs, gut-buckets and washboards.

david