Downloaded this the other week. So far it has really been useful, especially Viveza and Silver Efex Pro. Did a black and white conversion of the castle (messed up some in the bottom left where it's still a little too dark compared to everything else). Had to lower the file size to fit on here, so at the end I attached a link to my Flickr where the black and white picture is uploaded at a much higher quality.
Before (and saved at a smaller file size in order to fit here)
That was one of the features that got me really excited. I used to shoot Kodak T-Max 100/400 and Tri-X 400 for several years. The look that NIK creates is fairly close to what I remember my prints turning out as.