From 2013–2021, he starred as Detective Michael Hitchcock on the Fox/NBC comedy series Brooklyn Nine-Nine.
[3] He began appearing on American television in 1974, acting in an episode of Marcus Welby, M.D.
[4] He has had guest roles in ER;[1] Little House on the Prairie; The X-Files; Beverly Hills, 90210; Walker, Texas Ranger; Night Court; Murder, She Wrote; M*A*S*H; Doogie Howser, M.D.
[5] An article published by NBC states that (at an unspecificed date) "Blocker went back to school to earn his bachelor of arts degree so he could teach K-12" and in 2017, published a book that he had written, Master and the Little Monk, about "a lonely young boy who is befriended by a unique ally and mentor".
[6] His film credits include Midnight Madness (1980),[3] Raise the Titanic (1980),[4] The Border (1982), Poltergeist (1982),[4] Starman (1984), Trouble in Mind (1985), Made in Heaven (1987), Prince of Darkness (1987), Pink Cadillac (1989), Cutting Class (1989), Equinox (1992), Short Cuts (1993), Night of the Scarecrow (1995), and Mad City (1997).