Check out this cool New Horizons poster. Why post about a probe still about 5 years away from it's visit to Pluto? Well because the probe just recently imaged Pluto (I suspect for the first time) in a short exposure. It is still very far indeed, but at this distance it seems Pluto has become a fairly easy target. If you were at the New Horizons distance from Pluto today, I bet a small telescope would be enough to split Pluto and Charon. Probably not enough to pick up much of a disk, however. Correct me if wrong, I didn't do any math on this one.