I bought an SB600 recently. The sole reason I picked it over other speedlights in the market is its ability to trigger as a slave while my D70s plays master. I have never been a fan of flash photography & have always wanted to use _natural_ light. But after reading strobist for a while I realised that flash photography can produce some amazing results. Check the flickr strobist group's pool. I use the SB600 both on as well as off the camera. All my pictures using the SB600 can be viewed here. On the day I bought the speedlight, I shot this image.
After that, I shot a few images at a Kathakali performance. And a couple of nights back I experimented more with the strobe.
Here's a brief on the lighting: The background is a cheap colored (green) paper sheet I bought for Rs 3 per sheet at a local stationery store. There were two lights used. One a simple tungsten bulb (60W) & the other the SB600.
First I laid out the colored paper such the it formed both the base as well as background. After pinning up the top portion to the wall, I kept the SB600 (in slave mode) behind the sheet towards the top right corner facing the camera. The tungsten light was then placed towards the left of the frame on the same plane. A bit of trial & error showed me that 1/5th of a second was a decent speed for an aperture of f/4 at ISO200.
Here's the result