A few years ago I got the Mezco's Cinema of Fear of Jason Vorhees. This very cool figure combines a highly detailed roto-molded 12 inch figure with full articulation and removable fabric jacket. Jason is even more menacing with his arsenal of twisted weapons and removeable hockey mask.
I remember seeing Friday the 13th in theatre... I was underage but sneaked in. Now Isaac loves Jason and most horror icons.
Here is a photo of Jason unmasked! He also comes with various weapons and a severed head!