I just purchased "Physically Accurate Lighting in Mental Ray" (largely due to the 1/2 price on credits sale... thanks guys) and wanted to say how much I appreciate David. You really know your stuff and I learned a lot from this tut. I also got the nDynamics one a while back and it too was full of great info. I would like to buy the outdoor one soon too. I know it will be good. You guys have a great team of people working there and I wanted to express my gratitude. I'd like to see some more tuts on animation... preferably not on characters though. Thanks again.