The Thing With Two Heads

Have you ever wondered why there aren't any movies that have gorillas with two heads escaping from labs, running sideways down the street and invading corner markets just to eat bananas with both mouths?  Maybe you've been looking for a movie about a bigoted doctor that's contracted "terminal chest cancer" and needed to figure out a way that he could prolong his life, but you don't even know if one existed.  Well, my friends, search no further - your prayers have been answered and your movie has been delivered - it's been here since 1972!  The title of which you seek is The Thing with Two Heads, directed by Lee Frost, and starring Ray Milland and Rosey Grier as the titular character.