created by (100 episodes, 2004-2015)
written by (62 episodes, 2004-2015)
writer (44 episodes, 2009-2012)
creator (21 episodes, 2004-2017)
writer/creator (1 episode, 2004)
writer (40 episodes, 2009-2012)
writer (90 episodes, 2011-2021)
(123 episodes, 2011-2021)
(56 episodes, 2006-2019)
written by (1 episode, 2015)
(26 episodes, 2019-2020)
(10 episodes, 2007)
written by (5 episodes, 2007)
(2 episodes, 2004)
written by (1 episode, 2004)