whats wrong with a coordinated dance?
my husband and i took foxtrot lessons as were dancing to a sinatra song. i think its a lot of fun, eases up the stress of wedding planning, and also if you’re going to dance in front of so many people, might as well give them something worth watching! 
i like the michael buble song, Everything. its kind of slow but also a bit punchy so its easy to move to - plus the lyrics are sweet http://www.youtube.com/watch?v=SPUJIbXN0WY