I just got mine back from Ancestry, and no surprises at all, it's exactly my known family history - 52% Ireland, Scotland and Wales, and they pinpoint the Ulster region, 40% English and a bunch of European stuff of 1%, and that's expected as that's where people from the British Isles came from. Two Irish Grandfathers, one married an English girl, the other a Scottish girl.
I'll have to get my brother to do his. My father's side are often Black Irish, and my brother is - thick black hair, mono brow, brown eyes and dark skin...and his son is too. I'm more the stroppy little Irish jockey type, blue eyes and brown hair...and a tendency to get into trouble.
Ancestry DNA has brought up some names of possible relatives...there are names from my mothers side, none from my fathers.