Getting stolen domains back is not necessarily an easy task. Some registrars will play ball with you if your domains are stolen, and can usually help. Others say "not our problem."
If you are dealing with a "not our problem" registrar, your only recourse is a UDRP proceeding or filing in court. The difficulty with a UDRP proceeding is that if you simply held the domain as an investment, you may not have much in the way of "rights" as required by many panelists. However, I think that Darryl Wilson would be a good arbitrator for a case like this -- he's a no-nonsense guy, and I would predict that he might be willing to read the UDRP to cover cases like this.
If you are forced to go to court, either because the UDRP won't help you or because you need the domain back in a rush, that can get pretty pricey -- especially if you are in a rush. I had a client who was a hosting company that got his domain stolen by a guy who used the fake name "Mario Stoker." We had to seek a TRO in federal court in order to get his domain back -- since his whole hosting company was suffering as you can well imagine.
If your domain gets stolen, chances are it was a violation of 18 USC sect. 1030 -- which provides for both criminal and civil penalties. I'd imagine that most law enforcement would not take it too seriously, but there is that option.