What One CD In A Person’s Collection Would Be A Huge Turn Off If You Found It?

In a recent survey, 43% of women said that a man's CD collection determines whether or not she wants to date him. Let's review some of the questionable CDs I've seen that my friends have:  

-Tears For Fears Greatest Hits

-Dr.DRE

-Milli Vanilli

-Barbara Streisand

These friends I speak of, were all guys, single guys trying to impress ladies.

What one CD in a person's collection would be a huge turn off if YOU found it?