In 2004, for Australian TV, Gann appeared in two episodes of Blue Heelers and had a cameo on Kath & Kim. In 2006, Gann wrote and starred in 52 episodes of the Sketch comedy show The Wedge on Australia's Network Ten. Gann then created, produced, wrote and starred in the network's spin-off comedy series Mark Loves Sharon. The following year, Gann co-created and played the title character for the Australian comedy series Wilfred, based on the short film. It ran for two seasons, both of which went on to win awards at Tropfest in 2007 and 2009.