How many movies have Eero Niskanen and Heikki Vihinen acted in together?

They have worked on 1 movie together! Their first movie together was Esa ja Vesa – auringonlaskun ratsastajat (1994) and was their highest rated movie together. They have not worked together since Esa ja Vesa – auringonlaskun ratsastajat (1994).