When Jim meets Louis Gaedel, Louis says,'Kenny Hollywood said you're ok'. The Kenny Hollywood character appeared in There's One in Every Port (1977) played by Steve Landesberg.
Barry Atwater, who plays Roach (the gun supplier Jim talks to on the park bench) was fighting terminal cancer. He died five months after this aired, of a stroke.
This is Gerald McRainey's fourth and final appearance in the show.
Angel wants to call his memoirs "Witness for the Prosecution", even though some "other guy" used that title first. "Witness for the Prosecution" was a novella and play by Agatha Christie.
Evelyn (aka 'Angel') Martin's address is given as; 21150 Sierra Bonita #202 Los Angeles, Ca 91350. There's actually 2 Sierra Bonita Aves; a North and South, but the Zip-code makes it most likely, S. Sierra Bonita Ave.