I'll echo the "it depends on the crowd" theme. Find out about genre and any favs from Bride, Groom etc. and any things they really don't want to hear.
Some things that seem to go over ok are good Dance tunes - Disco era and danceable rock. (Of course, if its a country crowd this will only partially work)
Some suggestions tho--
- Songs from Saturday Night Fever soundtrack - Boogie Shoes, Stayin' Alive, You Should be Dancing
- Earth, Wind and Fire - September, Fantasy
- Commodores - Brick House, Sweet Love would work for a slow one (but its a bit longish I think), Lady
- ZZ Top - "Legs" if you're doing the garter thing with the bride, Sharp Dressed Man may work for a danceable song.
- Billy Joel - some of these work too (No not Captain Jack
)...
- Luther Vandross - for a slow one or two. Here and Now (is that what its called?)
- Sting/Police - Every little thing she does,
- A good Polka can get folks going too
- May want to try a Waltz to for slow ones
That's about all I can think of off the top of my head... hope that helps...