In the SitRoom, Leo asks, "Let's go around the table one more time. Where are we with this? What kind of day has it been?". "What kind of day has it been?" has been the title of the first season finale for Sorkin's Sports Night, The West Wing, and Studio 60 On the Sunset Strip. It was also of the title of the series finale for his HBO series The Newsroom.
The intense soundtrack used in the final scenes is "Angel", by Massive Attack (1998). The same piece was used, three years previously, in Go (1999), in which Taye Diggs also appeared.
In the limo on the way to the graduation ceremony at Georgetown University, President Bartlet (Martin Sheen) refers to the driver by the nickname "Coop". This was also the name of President Shepherd's limo driver in Aaron Sorkin's first White House drama The American President (1995).
A photo of Lawrence O'Donnell as Bartlet's father can be seen on his desk in the residence. O'Donnell played the role in the Season 2 finale "Two Cathedrals" and was a writer and producer on the show.