Of course "A Call From the Vatican" is at the top of my list. That is my number 1 seduction song, I can't get enough of it. Jane Krakowski's rendition has over a 200 count on my iPod and Anita Morris' isn't too far from that.
Other favorites:
"Sooner or Later"-DICK TRACY (of course it counts, plus it has been on Broadway in PUTTING IT TOGETHER, deliciously performed by Ruthie Henshall)
"Welcome to Holiday Inn"-SEESAW (pretty funny)
"I'd Be Surprisingly Good For You"-EVITA (nothing like manipulative seductive Eva Peron)
"Who Couldn't Dance With You?"-GRAND HOTEL (yes, I have a thing for Jane Krakowksi)
"Small World"-GYPSY
"Big Spender"-SWEET CHARITY
And two odd ones that I personally consider seduction songs (or at least they can be): "I Read" from PASSION and "Daddy's Girl" from GREY GARDENS.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"