loogie, good call with When You Say Nothing At All by Allison Krause
I'd have to add Trouble Me by 10,000 Maniacs (especially as an ode to communication in a relationship)
and If You Asked Me To by Celine Dion
Sway by Bic Runga
I Do (Cherish You) by...one of those boybands (they all look/sound the same to me)
With Or Without You by U2