Can you give me a very good jazz dance song?..?

Take 5 by Dave Brubek

Watermelon Man is pretty cool, or Canteloupe Island.

Also, any latin jazz, like Tito Puente. Puente, and many other Latin Jazz artists, took many jazz standards and made them into dance-able salsa tunes.

Also, swing music is cool, like In the Mood or Tuxedo Junction.

I guess it all depends on what you like to dance to.