Evidence:
* Both Le Roux and Satoshi did significant cryptography projects.
* Both Le Roux and Satoshi work in C++.
* Wright claimed in legal filings to have been involved with Le Roux.
* Allegedly, Wright and a friend have built a cluster of computers to crack secrets, which the theory presumes to be the password for a TrueCrypt volume with Le Roux's bitcoin key.
* Le Roux has an alias, "Solotshi", which sounds like Satoshi.
* Le Roux published a short manifesto, long before Bitcoin, that echoes some Bitcoin principles.
* Satoshi disappeared at about the same time Le Roux was really kicking his criminal conspiracy into gear.
* A forum post presaging Bitcoin was posted from the Netherlands, where Le Roux is from.
I mean, judge this stuff for yourself. Independently: a lot of people want this to be true.