Discover the hidden gems of Hollywood as we unveil the A-list celebrities who graced the set of M*A*S*H with unforgettable guest appearances. From Leslie Nielsen's impactful role to Ron Howard's unexpected character, let's delve into the stories of these renowned stars before they hit the big time – and find out the true mettle of an actor on the rise. So, let us watch the video and uncover the illustrious names that once walked the corridors of the 4077th.