No clue on the Lays ad, but given what I know about your musical 
tastes, Don, I direct you to an Australian duo called Forever 
Thursday, whose song "How Can It Be" is being prominently used in the 
new JC Penneys ad campaign:

http://www.myspace.com/foreverthursdaymusic

Minimal electronics, girlie vocals, and the satisfaction of knowing 
that it's just the sort of thing that sends Gabe Fuentes into 
apoplectic fits: what could be better?

S