Julian Gamble has played three different roles over the course of the series:
- Episode 6.23 Goliath (2005) - Colonel Gage
- Episode 2.2 Honor (2000) - Mr. Post
- Episode 1.6 Sophomore Jinx (1999) - Vargas
Danny Burstein (Mr. Brookfield) also played the role of Eric Parker in episode 17.3, Transgender Bridge (2015).