I had a few good ones:
BUY ONE, GET ONE
(When you buy one ticket, you get one ticket.)
CASH BACK!
(When change is due.)
TONY!
(Came to the show and loved it!)
"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