Step666 and Klexur have over time managed to gather a heap of desktop screen shots that have been displayed on deviantART and it appears that is the only place. To enable you to get some idea of what you can do with Emerge Desktop have a look at the screenies over there. Your imagination is your only limitation.
Also over at Customize.org is more good stuff that is worth looking at (yes of course it is all Emerge Desktop, what did you expect! ) more screen shots and information about the desktop in general.