Well, I would definitely like to know where he keeps his wallet and what the password for the encryption is. 
How many coins in total does Satoshi have?
Some say he holds more than 10% of total Bitcoins (not in circulation, but in number).
Did he ever dump?
they said he hold 1-2M at best, he has the greatest amount of coin, after him there was finney
no one know if he ever dump, but i suspect that maybe during the 1200 peak he dumped some, just for test how strong was the adoption
As far as I know every single address of satoshi is somehow known, and i've heard he never moved his coins.
Does anyone know satoshi's addresses?
Of course he could always have more that no one knows about, but I think it should be pretty easy to stop because in the begining the volume of transactions was small.