INITIALS B.B.The Comic Strip compilation may be an ideal overview to Gainsbourg's pop oeuvre, but for those sick puppies interested in exploring his entire catalog, this collaboration with then lover Brigitte Bardot is a good place to start. Many of his most infamous songs ("Bonnie and Clyde," "Comic Strip,") are here, and the lesser known numbers achieve the same giddy decadence. Yes, the subject matter is transgressive, the performances often silly, but long