Absolutely essential tool in the designer's toolkit. I use it to add large icons and thumbnails to all my stock photos. My wish is for an inbuilt proof sheet method. Currently I use Portfolio to catalog the photos and then print those to horizontal A4 pdfs with CD title in the header. I wish I could do that in GC. Or maybe I can but it is so obscure I can't find it.

I also wish I could penetrate the poorly laidout and less than obvious GUI. GC may be a great tool but it sure could use the guiding hand of a designer to make it more useful.