Firefox add-ons: Piclens

I was recently looking for some Firefox add-ons that I commonly use on my PC for my Mac, and I ran across a cool add-on called PicLens. This Mac and PC add-on, adds the use to browse through multiple photos on Flickr and videos YouTube at once. It's pretty much an eye candy app, but I found it useful to show my Flickr photos of my week at my summer camp in a nice slide show. The link is: Cooliris,inc. how you all enjoy and just try it out, you can always uninstall it.