A type of dance sometimes called Modern Jive.

Typically classes are run independent unlike the similar franchise Ceroc. A mixture between dirty dancing and rock and roll with the freedom to add other styles.
A very social atmosphere and fun way to meet new people. Easy to learn, good exercise, and addictive!

Also, if you're a guy and you happen to dance in a public venue, this can make all the girls jealous that their boyfriend can't do the same!