He appeared as a regular in several short lived series on ABC and Showtime, and landed guest spots on TV shows such as The X-Files and NYPD Blue among others, before playing two distinctly different characters on the HBO series Deadwood: Jack McCall in 2004 and Francis Wolcott in 2005 (Dillahunt returned in an uncredited role as a townsman in the 2019 Deadwood movie).
The actor, who appeared regularly in several short-lived TV series on ABC and Showtime, also made guest appearances on shows like The X-Files and NYPD Blue. He later played two distinct characters on the HBO series Deadwood: Jack McCall in 2004 and Francis Wolcott in 2005 (Dillahunt returned in an uncredited role as a townsman in the 2019 Deadwood movie).