Ron Eldard (Shep) begins sporting a '70s mustache in this episode because he was also filming the Barry Levinson movie "Sleepers" (opposite frequent George Clooney co-star Brad Pitt) at the time.
The title is from the title of the Van Morrison song "Days Like This".
Julianna Margulies (Carol Hathaway) & Ron Rifkin (Dr Carl Vucelich ) also worked together on The Good Wife (2009) in episode 6.19, Winning Ugly (2015), as Alicia Florrick & Spencer Randolph respectively.