"Showdown with Rance McGrew" is another clear attempt to insert comedy into the traditional Sci-Fi/Fantasy concept of "The Twilight Zone", which is something Rod Serling already tried earlier in the third season with "Once Upon a Time". Personally, I prefer my episodes as dark and sinister as possible, and I don't like the light-headed, comical or overly moralistic ones. "Showdown with Rance McGrew" isn't an exception, although I gladly admit I had to laugh out loud a couple of times with the spoofing of typically arrogant Hollywood actors and how contemporary TV-series illustrate the supposedly "Wild" West. The spoiled and obnoxious actor Rance McGrew is a loathsome person to work with on set, but naturally considers himself to be God's gift to screen entertainment. In his films, he supposedly defeats the meanest guns of the Far West without much effort. But then, a typical TZ-occurrence takes place, and McGrew finds himself inexplicable transported back in time and faced with the real Jesse James for a little lesson in humbleness. It's a forgettable and thoroughly unremarkable entry, but - as said - good for a handful of chuckles, especially whenever McGrew hysterically calls out to his stunt double.