The modern stuff is, but there are loads of traditional and Fifties dances that are great for one night stands.

Take a Peek
Chase the Rabbit
Swap and Swing
Pop the whip
The Cowboy Loop
Texas Star
Coming 'Round the Mountains
Golden Slippers (Uptown, Downtown)
Hot Time in The Old Town Tonight

You might even try one or two of the early modern dances such as Around Just One of Chicken Plucker if you get a good crowd.