At the end of the episode, we see a framed photo on a lamp table in the president's private study. It is of Bartlet (Martin Sheen)'s father, as portrayed by series producer Lawrence O'Donnell.
When Donna (Janel Moloney) talks to Josh (Bradley Whitford) about the job offer in Act III, a Peters projection map can be seen in Donna's cube. This is a hat-tip to the discussion of maps during S2E16 (Somebody's Going to Emergency, Somebody's Going to Jail (2001)), one of the Big Block of Cheese Day episodes.