Charlie Shrem ran Bitinstant, a service that allowed users to quickly get Bitcoin onto the MtGox exchange. In January 2014 he was arrested for aiding and abetting. He was on house arrest for most on 2014 until December 2014 where he was sent to prison.
According to his website blog post today, he got out a few days ago! (http://charlieshrem.com/onward/)
Congrats Charlie!!