Congratulations, It's a Boy! on AllMovie

We know that Bill Bixby plays a swinging bachelor because he wears bell-bottoms. Opening the door of his bachelor pad one evening, Bixby is surprised to meet a personable young man claiming to be his son. He is further surprised that the young man is fully grown, the result of an indiscretion some twenty years earlier. Karen Jensen plays Bixby's girl friend, none too thrilled that she has a potential younger brother. Mixing in some reasonably touching moments with its standard comedy setpieces, Congratulations, It's a Boy is a satisfying effort from ABC's Movie of the Week series.