We covered this yesterday with a link to a Flickr photo set of desktop backgrounds that look like the wall behind them, but now Engaget has uncovered some transparent portraits on the PSP:

This is a lot harder than taking a picture of your wall! Feel free to look for more on Flickr: www.flickr.com/photos/tags/transparent/ It won’t be long before someone combines all display technologies to create a transparent TV, computer, PSP, gameboy, etc all in the living room…