Osho Nataraj Meditation is dance as a total meditation, disappearing in the dance, then relaxing into silence and stillness.  There are three stages, lasting a total of 65 minutes.  

"Let the dance flow in its own way, don't force it.  Rather, follow it; allow it to happen.  It is not a doing but a happening....  You are just playing with your life energy, playing with your bio-energy, allowing it to move in its own way."
- Osho, Meditation, The First and Last Freedom