The Tarzan curtain was one area where the show did not suck, especialy (spoilers) as during the pre-show, the Captain's (Of the ship that Tarzan's family is on) log is being projected onto it to give the feeling of a ship at sea.
The holes in the current Sweeney curtain give it a sense of menace which helps set the stage.
The one show everyone on Broadway is waiting to see: Twyla Tharp presents: Big Bottom - The Spinal Tap Jukebox musical!