Here is another. See how in the base shot the sky is blown out. But in the second which is the HDR shot the color blue is preserved.

I was taking shots at the Murfreesboro greenway today with my new canon sx20. I decided to take a shot with the iPhone4 to test it's HDR function they have added. You can tell the normal shot by where the low grass is blown out. The second shot you can see all the detail. I have tested a number of shots and becoming more tempted to turn off the option to retain the original shot and just shoot the hdr as a rule on the iphone4. I think this makes it an even better on hand on demand point and shoot camera with quality results.