If you want cheese, go back to the future with Huey Lewis & The News - Power of Love
Others I'd consider (just flicking through my playlist), some more danceable than others:
Alanis Morissette - Head Over Feet
Bachman Turner Overdrive - You Ain't Seen Nothing Yet ("B-b-b-baby you just ain't seen n-n-n-nothing yet!")
INXS - Never Tear Us Apart
Elvis - Burning Love
Elvis - Falling in Love
Elvis (Costello) - She
Four Tops - Reach Out (I'll Be There)
Journey - Anyway You Want It
Lonestar - Amazed <--- a very soppy but good one
Louis Armstrong - We Have All the Time in the World
Love Affair - Everlasting Love <--- I LOVE this one!
Madness - It Must Be Love
Mama Cass - Dream a Little Dream <--- another fav of mine
Nina Simone - Feeling Good <--- mm yeah! There's also a good cover of this by Muse
Peggy Lee - Fever
Rent (musical) - Seasons of Love
Savage Garden - Truly Madly Deeply
The Calling - Wherever You Will Go
Elton John - Your Song
Wannadies - You and Me Song
Wham! - I'm Your Man