A little before the 15:00 mark, Robert says that, as a benefactor of the theatre, he believes he deserves to play Sky Masterson from "Guys and Dolls", which is a random choice as they debate over what their next musical should be. This may be a nod to fellow "Grace and Frankie" cast member Peter Gallagher, as he played Sky Masterson in the 1992 Broadway Revival of "Guys and Dolls".
During the arraignment scene, you can see Ramón Estévez, Martin Sheen's son, playing an extra sitting next to Grace.