There are actually two documentaries I suggest you watch in relation to nakamoto and Dread Pirate Roberts
The one Currently on netflix is called Banking on Bitcoin - really facinating look at policy as well as early adopters and speculation on who Satoshi could really be.
Dread Pirate Roberts is explained in depth on the documentary Deep Web (which I believe is also on netflix)
It casts some serious doubt on if Ulbright was indeed DPR if the name didnt give it away.
Either way interesting movies related to this!