Like his character, Rory Calhoun was a former star of B-Westerns.
"Angel" gained popularity on video, which helped spawn three sequels.
Not only did two straight actors, Dick Shawn and Susan Tyrrell, portray gay characters, but their gay characters were co-leads, endearing, and non-cliche' (Shawn plays a cross-dresser), which was rare during this time.
Shot in 20 days.