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"It's called I Wont Play Mackers and the lyrics are:

Call me superstitious or cowardly or weak
But I'll never play a character
Whose name one dare not speak

I'll play Hamlet
In doublet and hose
Or either of the Dromeos
But sorry, I won't play Mackers

I'll play Richard the Third
With a hump and wig
Or Henry the Eighth
That selfish pig
But sorry, I don't do Mackers

Every soul that plays this role
Risks injury or death
I'd rather sweep the bloody stage
Than ever do
Mac-you-know-who

So gimme King Lear
Cleopatra
Romeo, Juliet
Doesn't matter
I'll play them all for free
But I'd be crackers
To take on Mackers
You see, I'm skittish about the Scottish tragedy "

http://www.answers.com/Q/What_are_the_lyrics_to_the_theme_song_for_the_second_season_of_Slings_and_Arrows