At the end of the episode, Ben jokes to Karen that her champagne has been laced with Polonium, a reference to the death of the murdered Russian former FSB agent Alexander Litvinenko, who was poisoned with Polonium.
First appearance of Hugh Laurie as Tom James.
Lennon Parham (Karen Collins), Tony Hale (Gary Walsh) & Phil Reeves (Andrew Doyle) also worked together on episode 4.14, Off the Hook (2013), of Arrested Development (2003) as Therapist Sandy, Buster Bluth & Colonel Smalls respectively.
Matt Walsh (Mike McLintock), Sam Richardson (Richard Splett), and Randall Park (Danny Chung) also worked together on Office Christmas Party (2016) as Ezra, Joel & Fred respectively.