Finally found some time to get this thing going:
seatlink.com
US airlines are pretty much done, but I've got a ways to go converting old image files to what you see on the site (maybe 750 of 1,500 or so total aircraft are done). I had originally wanted everything to be user editable a la wikipedia, but not sure there are enough people out there to collectively contribute and maintain accuracy.
Interested in feedback from fellow frequent flyers, what's useful/useless, what you would like to see, etc.