The entrance of the ensemble in 42nd STREET. The anticipation that the raising of the red curtain to knee-height to reveal two dozen tap-dancing gypsies is quite a thrill.
Godot also has a highly-anticipated entrance and it is great!
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle