Hokey Pokey
Celebration
We Are Family
Wind Beneath My Wings
Can I just say this? Please people, if you don't want to make your guests to regurgitate the buffet dinner, DON'T choose Wind Beneath My Wings as your "first dance" or your "mother dance" or "father dance" - it's really lost it's power over the years.
It's probably not overplayed at most functions, but in my family over the years, THE MUST PLAY song is "New York, New York". (No, we're not from NY. I don't know how that came to be)