Continuity mistake: When Roberta is in Brian's apartment, she is putting curlers in her hair and then Brian walks in and they start talking. Roberta then stands up and Brian kisses her neck and as she turns around you can see the curlers have disappeared.
Continuity mistake: When Roberta argues with her son about his father in the kitchen, there are some cupboard doors which go from open to closed then back.
Continuity mistake: In the Carnegie Hall concert scene, it appears that Lawrence is seated next to Cloris Leachman in the audience. But Lawrence should be at least ten years older by now, as Roberta's sons are.
