When she mentions Arnie's bad temper in the interview, the couple are rejected for adoption.
Arnie pries the truth out of Elaine, but is afraid to tell Beth that he is responsible for their not getting a child. He uses "yada yada" to cover up the details of his meeting with Elaine, unwittingly making Beth think he cheated on her with Elaine.
Elaine lobbies on behalf of Beth and Arnie, and sexually propositions to Brian, the adoption official, as an inducement.
He was seen in:
* 3rd Rock from the Sun