I've already backed the Polymakr - It looks very interesting, although I think i'll probably want my object cooling fan setup before it arrives! It's pretty much the same price as regular PLA here so even if it's not a great deal better it's still stock!
I want some ninjaflex, some laywoo-D3 and some of the laybrick filament.
I have an architect friend who is interested in letting me try and print his Sketchup drawings for his clients, which could prove fruitful.. The ninjaflex is just for playing really, I would like to print some wheels for my RC car, and maybe some shoes or maybe gloves? and the laywoo just because I have a friend who is very much into woodworking & he is interested