DBGallery: Photo Database System - DBGallery is a database application used to store data about images.  This idea is certainly old and simple, and may seem rather boring, but this system extents that idea to new and interesting levels.  Its addictive actually.  Searching for photos by camera (no data entry required, cameras store this), city, persons name, and other keywords makes browsing much more interesting.  Photos can be assigned subjects, titles, descriptions, loads of keywords, etc.  Its a whole new way to filter and find photos.  With it, one finds themselves combing through, making use of, and enjoying their photo collection more than ever.