"Stairway to Heaven" is a outstanding invention of movie making, probably never duplicated. I rank it with "The Wizard of Oz" and "African Queen," although it is a totally different type of movie than "African Queen." "Stairway to Heaven" is a psycho-drama that uses performance concepts and technical effects that, to my knowledge, are totally unique. For example, there is the combination of BW and color footage - as in "Oz," but the significance of the contrast goes way beyond the simple - but beautiful - effect achieved in "Oz." In "Stairway" the purpose and effect of the contrast can only be described as powerful.Another brilliant aspect of "Stairway" is the concept of "time" and how it is used here. How could anybody have conceived of a better way to make time stand still  literally? And then there is the Stairway itself!If you have any imagination at all, you will agree with me. "Stairway to Heaven" is a true gem.