There are several in my life actually:
Angel By Wumpscut
Angel By Aerosmith
Principles of Lust by Enigma - Reminds me of some of my hrmmm... happiest / most intimate moments in my life where I either have or thought I have made a real connection with someone (which explains why I used to meditate to that album, trying to recapture that elation)
There are several others... but yeah this one stands out.