From the Captain's Armchair Episode 6: Arena

 The good ship Armchair has settled in between a zone where the alien life doesn't make itself known to us until the very last five minutes of our stay! While we're there we have to watch Captain Kirk and a Gorn captain fight it out on a planet laden with riches, but the aliens have told us thus.

 "For bringing hostility into their solar system, a superior alien race brings Captain Kirk in mortal combat against the reptilian captain of an alien ship he was pursuing."

 Who will survive in a battle of the fittest? Find out today!

Intro music can be found at 

http://freemusicarchive.org/music/Lobo_Loco/Space_Prophecy/Sheep_Clouds_ID_516