His official movie debut was in 2001's
The Car Thief and the Hit Man. Donowho co-starred alongside Emile Hirsch in
The Mudge Boy. In 2003 he was featured as the drummer for a song in
The Hermitt's "& The Story of The Insects". Donowho is known for his work in 2004's
Imaginary Heroes with
Emile Hirsch. In the film, Donowho plays a sexually ambiguous character. Donowho's roles in
Imaginary Heroes and later in
A Home at the End of the World created for Donowho a positive relationship with the gay community. He appeared with brother Matthew at the 2004
Outfest, a gay and lesbian film festival held annually in
Los Angeles along with the cast and crew of
A Home at the End of the World. He appeared in
Bringing Rain with
Rodrigo Lopresti and
Alexis Dziena. For the third season of
The O.C., the producers cast Donowho as
Johnny Harper. Donowho played Stanley in the 2006 film adaptation of
Strangers With Candy but does not appear in the released version of the film. Donowho appeared in the thriller film Altitude. He played the lead character of Nathan in
Rites of Passage. ==Filmography==