I have started another theater side project. I decided that I want to make myself a digital poster display board. I'll be using some sort of LCD tv mounted vertically on the wall. I actually have a 32" with a faulty power supply that I might repair for this purpose. I saw Mario's virtual poster display in his build thread here: http://www.avsforum.com/t/1208912/the-cinemar-home-theater-construction-thread/2430#post_22464672
I use XBMC as my media playback software so i decided to code my own poster display software to interface with it.
Here is a video of my prototype:
It connects to xbmc via a specified ip address and displays information about the currently playing media, including the MPAA rating, runtime, audio and video codecs, and resolution. It can either show the thumbnail stored in xbmc or download a high resolution poster from TMDB.com. When a movie is not playing it downloads and displays posters for upcoming movies from TMDB.com as well. Its still a work in progress and i have a few more features i want to add, but so far its working well.