 Super Mega Cakes (2025) (TV Series)-Self - Team Duff (as Geof Manthorne) (3 episodes, 2025) Self - Team Duff (as Geof Manthorne) (3 episodes, 2025) See fewerAlien Invasion (Jul 21, 2025) Season 1, Episode 6-Self - Team Duff (as Geof Manthorne) Self - Team Duff (as Geof Manthorne) See fewer |
 Duff Takes The Cake (2019–2020) (TV Series)-Self - Cake Artist - Executive Chef / Self - Executive Chef (7 episodes, 2019) Self - Cake Artist - Executive Chef / Self - Executive Chef (7 episodes, 2019) See fewerMay the Cake Be With You (Jun 22, 2020) Season 2, Episode 3-Self - Executive Chef (as Geof) Self - Executive Chef (as Geof) See fewer |
 Buddy vs. Duff (2020) (TV Series)-Self - Executive Chef (6 episodes, 2020) Self - Executive Chef (6 episodes, 2020) See fewerStar Wars Cake (May 3, 2020) Season 2, Episode 8-Self - Executive Chef (as Geof Manthorne) Self - Executive Chef (as Geof Manthorne) See fewer |
 Duff Till Dawn (2015) (TV Series)-Self - Judge (3 episodes, 2015) Self - Judge (3 episodes, 2015) See fewer Super Cake Heroes (Feb 19, 2015) Season 1, Episode 5-Self - Judge Self - Judge See fewer |
 Ace of Cakes (2006–2010) (TV Series)-Self - Executive Sous Chef (as Geof) (106 episodes, 2006) Self - Executive Sous Chef (as Geof) (106 episodes, 2006) See fewerUK Invasion (Dec 9, 2010) Season 9, Episode 13-Self - Executive Sous Chef (as Geof) Self - Executive Sous Chef (as Geof) See fewer |
 The Price is Right (2010) (TV Series)-Self - Guest (1 episode, 2010) Self - Guest (1 episode, 2010) See fewer Episode #39.59 (Dec 6, 2010) Season 39, Episode 59-Self - Guest Self - Guest See fewer |
 Cupcake Wars (2010) (TV Series)-Self (1 episode, 2010) Self (1 episode, 2010) See fewer Ace of Cakes 100th Episode Celebration (Jun 29, 2010) Season 1, Episode 4-Self Self See fewer |
 Food Network Challenge (2005) (TV Series)-Self - Duff's Assistant (as Geof Manthorne) (1 episode, 2005) Self - Duff's Assistant (as Geof Manthorne) (1 episode, 2005) See fewerSpooky Cake and Candy Challenge (Oct 23, 2005) Season 1, Episode 72-Self - Duff's Assistant (as Geof Manthorne) Self - Duff's Assistant (as Geof Manthorne) See fewer |