BTC income & asset distribution?

Anyone can point me to data about BTC asset distribution (ex. a list of the 100 "fattest" wallets in a given time) and income distribution (ex. a list of the wallets who received more in a given time)?

The ideal would be some graphic representation of the total BTC distributions in different times (even if I figure how misleading such data could be, given that every user has a random numbers of wallets).

I ask because it could be interesting to see if such distributions are more or less egualitarian than fiat monies', and if their concentration seem to increase or decrease in time.

Given the number of "big swinging dicks" so much capitalized on the GLBSE, and even due to other factors (like a couple of millions of "sleeping" BTC), I would not be surprised at all to find some extremely unequal distribution.