That reminds me of a curtain that I was a part of.
We did the play BANG BANG, YOU'RE DEAD and toured it to local middle schools. We then took it to a high school, performed it, and did our regular curtain call which was this:
This was a cast of 18 people. The show ends where a student (who goes into the school cafeteria and shoots/kills five other students, possibly others) falls to his knees and says "Oh God" after it has sunken in on what he has done. A blackout slowly fades in, where only a red spotlight is on this student, and then it goes out.
All us actors then slowly walk to the ends of the stage towards the audience, in a chorus line, then the lights fade back on to reveal a perfectly straight line of actors from one end of the stage to the other end. No one bows. We just stand there with expressions on our faces that say "Yeah. Scary, isn't it." A song then fades on (from KORN I believe, which was played before and a point during the show. This song seemed to be for "fun before the show" but during the show was "oh no" and after was "oh my god!").
No one clapped, but everyone stood, in awe. The silence was our applause. The tears were our applause.
"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