The Dans Festival 2010 is on-going. There are quite a few free events if you are not sure if you want to pay for something like 'arts' that is alien to you. ;-)
It's on from 8 - 17 October.
This was one of the free performance at Esplanade.
Visit http://www.dansfestival.com/2010/ for more information.
I uploaded a bigger photo at Flick here if you want to read more about the above Tari Pendet.