Bad Guys
It's not really a custom, but from a small off-the-radar Asian company. There are also figures out there of Saddam, Saddam's son, and Saddam's son post-mortem. They all have a similar look and may be from the same manufacturer. The sculpts seem to capture a basic likeness, but look rather soft and appear to lack detail, though that may be because the paint applications are pretty basic. The heads look like they might be made of vinyl. I think you can pick up both the Bin Laden and Saddam heads from Bear Johnson's One Sixth Depot. There's a Fidel figure in current release from Asia, and Bear has that head. There's also a Che from How2Works that has an imitator knockoff; both have been out for around a year now. A third Che that sometimes pops up on eBay is a real handmade custom in an edition of about 50 or less, with a different and I think better likeness.
If you're into a Hall of Infamy display, there's plenty of material out there.