We had Crowded House - Don't Dream its Over. It was the first slowish song we could dance to in our playlist.
Should of been It Had To Be You as thats what DH used to sing to me, but I'm rather glad its not.
Barenaked Ladies $1,000,000,000 is a fab song, and a great first dance one. Always makes me think of my friends, esp as one is living the other side of the world.