7. Leonard Cohen ('French Twist,' Season Two)
Miami Vice wasn't just a cop show for mass audiences — it was a show that catered to fans of musicians across the board. How else to explain Leonard Cohen's unlikely casting as Francois Zolan, a duplicitous French secret-service agent on the second-season episode "French Twist." BONUS: Cohen, a native of Quebec, delivers all of his lines in French. Oui, Miami.