With the desktop app running (configured as a simple preference), you can browse iTunes playlists as well as your entire library. From iPhoto, browse your library, events and slideshows. Keeping events intact is nice for when you want to show Aunt Shirley pictures from your trip to Scranton.
Note that this requires a FiOS TV DVR Set-Top Box, Mac OS X 10.4 or greater, iTunes 7 or greater, iPhoto 6 or greater and QuickTime version 7 or greater. For an unnecessarily enthusiastic demonstration of the software, check out the video after the break.
(Screenshot courtesy of Dave Zatz / Zatz Not Funny)