Hitachi launched a brand new technology called miragraphy in mid-July (hat tip: J@pan Inc Gadget Watch).  The idea is to combine a half mirror and a diffusion film to directly display digital info such as text, photos, videos, flash animations, TV shows, etc.  Miragraphy also integrates sensors, barcode and RFID readers, cameras, etc.  The mirror can automatically respond when folks are around and even create a personal experience based on the end-user's sensed identities.  I mean the possibilities are endless - imagine combining this with biometrics or with other technologies.  Uses would include the fashion and plastic surgery industries (to allow consumers to play "what if" scenarios) in addition to advertising (in public spaces such as restaurants, hotels, train stations, airports, etc.)