The Yale Whiffenpoofs, whom Aaron Sorkin is a big fan of, perform.
Toby's father looks at a framed newspaper clipping on his office wall. This particular newspaper photo was used as a plot device in the first season, when Sam and Toby are sent to rescue the Supreme Court nominee from jail. The episode was The West Wing: Celestial Navigation (2000).
There is a snow globe in C.J. Cregg's fish bowl.