He has acted in traditionally distributed films like Slither and Trucker, Internet-distributed films like Dr.Horrible's Sing-Along Blog, television soap operas and sitcoms, and theater.In 2009, Fillion was nominated for Satellite Award for Best Actor – Television Series Drama for his performance in Castle.On March 30, 2010, ABC announced that Castle had been renewed for its third season with a 22-episode full-season order.' The couple are pictured together in a picture from the heiress' 18th birthday Miss Jackson has also recently got a tattoo, captioning a photograph on Instagram: '"Queen of My Heart" in his handwriting. Fw-300 #ya-qn-sort h2 /* Breadcrumb */ #ya-question-breadcrumb #ya-question-breadcrumb i #ya-question-breadcrumb a #bc .ya-q-full-text, .ya-q-text #ya-question-detail h1 html[lang="zh-Hant-TW"] .ya-q-full-text, html[lang="zh-Hant-TW"] .ya-q-text, html[lang="zh-Hant-HK"] .ya-q-full-text, html[lang="zh-Hant-HK"] .ya-q-text html[lang="zh-Hant-TW"] #ya-question-detail h1, html[lang="zh-Hant-HK"] #ya-question-detail h1 #Stencil . His final appearance was the final episode of season 4.He voiced the role of an ODST Gunnery sergeant in the Xbox 360 game Halo 3, alongside fellow Firefly stars Alan Tudyk and Adam Baldwin.
Fillion joined the cast of ABC's Desperate Housewives at the beginning of the fall 2007 season as Dr. His first appearance was in the episode "Now You Know", which aired on September 30, 2007.
Fillion lent his voice to the animated series King of the Hill in 2001, the video game Jade Empire (as the voice of Gao the Lesser), and the animated series Justice League Unlimited (as Vigilante in the episodes "Hunter's Moon" and "Patriot Act") in 2005-06.
He portrayed Green Lantern/Hal Jordan in Green Lantern: Emerald Knights, Justice League: Doom, Justice League: The Flashpoint Paradox and Justice League: Throne of Atlantis.
confirmed that Fillion was cast as Alex Tully in the series Drive, which debuted on Fox in the spring of 2007. Ivan Sergei played Alex Tully in the original pilot episode of Drive.
The first two Drive episodes premiered on April 13, 2007, in Canada (April 15, 2007 in the United States).
Since 2011, Fillion has appeared as the recurring Space Western character Cactoid Jim in performances of the podcasted live show The Thrilling Adventure Hour, a stage show premised on the idea that actors are performing as characters in a radio show.