I went to see The Gates today. I have to admit that I was impressed. The whole thing looks great. The effect is quite surprising. This article in the Times sums things up pretty well.
I took about 50 pictures, and uploaded them here. Looking through them again, I find myself wanting to go back for another look.
For the record, I edited some of the pictures in Paint Shop Pro, and left others as-is, so the color is sometimes a bit different between pictures. I found that most of them looked best without any finagling, even if they were a bit dark.
(Edit: these photos can now be found on Flickr.)