I'm not at all sure that do has had any surgery, I think he is just a very very handsome man.
I remember years ago, one of his sons was doing the obligatory missionary work that Mormons do, and they are allowed a limited number of family contacts during this time, and Donny used an appearance on a TV show to link up with his son. Donny JR. was even more devastatingly good looking than his father, and there was very obvious love between them.
I think DO is a cool guy - don't buy into his faith, but he seems like a really decent person.