Also available for iOS: http://itunes.apple.com/us/app/faceshow-for-ios/id516445649?ls=1&mt=8
faceShow is an app designed to make the Facebook photo viewing experience as comfortable as possible. In short, faceShow is an app that does a slideshow of all the albums you select. Once logging in to the application you will be taken to a list of all your friends and their Photo Albums. You can select which albums you would like to view and the transition time between each image, and after pressing start the slideShow of all the selected albums begins. faceShow also adds the option to download the selected albums. During the slideshow you can:
-Pause/Play using the "space" bar
-Go to next/previous image using "right/left" arrows
-Add/view comments or like by moving the mouse to the right side of the window when in pause mode