Tootfinder

I've really enjoyed hearing where we are on 3D-printed rib-ticklers sooo...
MAST #3DPrintingGeeks!
Tell me the wildest new thing in your area that will make me go WOW!
Is it speed? Materials? Colours?
Also, when do you think 3D printing will go truly mass-market? It feels like you still need a load of patience / expertise?