A professor at East Tennessee State University researched Shakespeare's ties with country music. Go here to read all about it. What caught my eye was this:
"He also discovered instances of country music artists performing Shakespeare, including Jerry Lee Lewis playing Iago in a stage production in the late '60s."
Update: Jerry Lee Lewis was Iago in "Catch My Soul," a musical (what else) produced by Jack Good. It was later turned into a movie directed by Patrick "The Prisoner" McGoohan. Richie Havens played Othello. Man, I love the Internet!