As a Rude Boy in high school, my favorite Ska band was The Scofflaws. One of the most popular songs of their live sets was William Shatner, during which the band and the audience would run back and forth on cue, much like the characters on Star Trek would do when the Enterprise was attacked.

The song mentions a particular episode of the original series:

I really like the one where he reads the Constitution
After ending all the fighting in the future revolution
WILLIAM SHATNER!

Note: The intro to the song uses a naughty word and mentions Skinheads Against Racial Prejudice

##What episode is the song talking about?