Hannibal refers to his fellow winos as 'knights of the road.' This is also what Murdock called the team when they were cab drivers in season 2.
Throughout the episode, Murdock is obsessed with turning himself invisible. He claims that all he needs to do to turn invisible is think about "white paper." This is a reference to an earlier Stephen J. Cannell series, "The Greatest American Hero".
Stephen J. Cannell asked Dwight Schultz to impersonate Burt Reynolds when posing as "Father Harry Dean Hanover".
When he's in character as the evangelist Harry Dean Hanover, Dwight Schultz does a Burt Lancaster impression, since one of Lancaster's most famous roles was evangelist Elmer Gantry, in the 1960 movie Elmer Gantry (1960).