Nathan Lane and Christine Baranski previously appeared together in the film, The Birdcage (1996), and also off-Broadway in Lips Together, Teeth Apart, and The Man Who Came to Dinner.
Chris Noth (Peter Florrick) & Daryl Edwards (John Lawson) also worked together on episode 1.8, Poison Ivy (1990), of Law & Order (1990) as Mike Logan & Richard respectively.
Chris Noth (Peter Florrick) & David Margulies (Richard) also worked together on three episodes of Law & Order (1990) as Mike Logan & various characters respectively.
Chris Noth (Peter Florrick) & Maura Tierney (Maddie Hayward) also worked together on episode 2.3, Aria (1991), of Law & Order (1990) as Mike Logan & Patricia 'Patti' Blaine respectively.