creator (11 episodes, 2005-2010)
writer (11 episodes, 2005-2010)
writer (7 episodes, 2007-2010)
developer (6 episodes, 2007-2008)
writer (6 episodes, 2007-2008)
consultant writer (6 episodes, 2007-2008)
consultant writer (5 episodes, 2007-2010)
consultant writer (3 episodes, 2008)
consultant writer (1 episode, 2007)
consultant writer (1 episode, 2008)
consultant writer (1 episode, 2010)
head writer (1 episode, 2010)