My son looks and sounds exactly like his Dad. He is laid back like DH was too.
My daughter is a good combination facially of both of us but she and I have the same quick, scarcastic, irreverent sense of humor (at home, we behave in public).
When DH was here DD and I would come out with the exact smart comment at the same time. DH would just laugh and shake his head. If I had $1 for every time he said "omg Jane, she is just like you." I'd have a pile of dough.