Trivia

Originally, J. Michael Straczynski intended to cast McGill in the role of Major Ryan in the Babylon 5 (1993) episode "Severed Dreams". However, Straczynski didn't know his full name, so when he asked to have McGill contacted to set up a meeting about casting him, his assistant asked if he meant Bruce, and Straczynski said yes. Bruce McGill was invited to meet with Straczynski, and it was only after the two met that Straczynski realized his mistake. Straczynski decided to use Bruce for the role of Major Ryan, despite this.

Like the other cast members of David Lynch's Dune (1984), McGill, who played Stilgar, was under contract to appear in sequels should the first film be a success. However, Dune performed poorly at the box office and those sequels were never made.

Graduated from Rosedale High School in Kansas City, Kansas in 1963.

No relation to fellow actor Bruce McGill, despite a popular misconception.

Best known for his role on Twin Peaks, in which McGill worked with Miguel Ferrer. The main character in O Brother, Where Art Thou? (2000) is named Ulysses Everett McGill, and is played by Ferrer's cousin, George Clooney. After this, McGill took a long hiatus break from acting, where he relocated to Arizona. He appeared in Twin Peaks (2017), the reboot of the original series.