Although many people think Doris Day and Rock Hudson co-starred as often as Spencer Tracy and Katharine Hepburn, this was only their third - and final - appearance as a screen team. Tony Randall also appeared with them in all three films: Pillow Talk (1959), Lover Come Back (1961) and this.
When Dr. Morrissey is delivering fish to Judy, she mentions that George is dying. Dr. Morrissey starts laughing and sits down, taking his glasses off.
In the next shot the glasses are back on.
In the breakfast scene at the beginning of the picture, the level of coffee in Judy's cup constantly changes between shots. Also, the coffee starts out black, then later has cream in it.