Too many to list. I've got custom made demo discs for multiple genres, live recordings. etc. So, hopefully I've got something to please and/or impress everyone. But, I agree the best impressions are more often made when the guest picks the tune(s).
But, two of my current favorites are: "Angry Eyes" by Loggins & Messina and "Don't Interrupt The Sorrow" by Joni Mitchell.