In the Blender version I use Blender 2.6something, you can select your model in edit mode and hit space bar to bring up the search feature, type in quads, and select "Tris to Quads". Or if you have a good memory just hit Alt-J.
Also something you could do is smooth-shading and edge splitting to make them look less jagged when the faces come out, but I still recommend smoothing them out nontheless
and that model will never both fit in the hand and fit the Blockhead model without making half of the model be behind the Blockhead