SpaceX? Lytro? Project Glass? I think the maker movement and 3D printing will have the greatest impact.
Battery technology. It's an extremely low-level bit of tech for most consumer discussion, but it drives so many aspects of what technology we get in our hands. LTE? Gotta have battery to do it right. Retina display in iPad (3)? Giant battery.
I think that the advancements in carbon nanotube electrodes in batteries looks promising, and they're nearing production.
And Apple recently filed a patent for induction charging that could allow an iPhone to be charged via a magnet traveling past a coil inside the device.