A fitting episode for the 100th show. Great job guys, looking forward to 100 more :)
I was really into Jeff's discussion about what happens when we can print real objects (that are of reasonable proximity to the real thing). My first though was paper currency. Yes, I have a printer that can put anything on paper, but there are means (a specific type of paper, details, etc.) that prevent me from printing my own money. I think the same would apply to objects. There will always be something that keeps the "real stuff" one step ahead of what you can make on your own, either in working or in quality (oddly enough my other thought was coloring books...when I was little I would print out stuff for to color in, but it was never as cool as having an actual coloring book that was from a store).