His father was the CEO for the Canadian beer giant Molson Inc
Got his start doing voice-over work for GMC Trucks and Lamisil antifungal tablets
His then-wife, Amy Poehler, played the wife of his character on Arrested Development and his sister/skating partner in the Will Ferrell comedy Blades of Glory
Is friends with screenwriter Dave McLaughlin and starred in the scribe's Southie and On Broadway
Reunited with Arrested Development creator Mitchell Hurwitz and costar David Cross for Running Wilde; in addition to his acting role, Arnett also helped create the series and served as a writer and executive producer
Is a huge hockey fan and supporter of the Toronto Maple Leafs
Awards
2013Screen Actors Guild Awards-Outstanding Performance by an Ensemble in a Comedy Series:nominated
2006Emmy-Outstanding Supporting Actor in a Comedy Series:nominated
2005Screen Actors Guild Awards-Outstanding Performance by an Ensemble in a Comedy Series:nominated
2004Screen Actors Guild Awards-Outstanding Performance by an Ensemble in a Comedy Series:nominated