Any? I have a few I've discovered:
This has been discussed: On AIDA, at the end of ANOTHER PYRAMID, you can hear Zoser say, "Suffocate them"
On JANE EYRE, right after SWEET LIBERTY ends, you can hear what sounds like a rock band performing.
This is my favorite: On WOMAN IN WHITE, *SPOILER ALERT* when the Asylum guards are chasing Anne, you can hear one of them say, "Don't be a b*tch."
Anything like that you guys have discovered?
MARGARET: "Clara, stop that. That's illegal." - The Light in the Piazza
"I'm not in Bambi and I'm not blonde!" - Idina Menzel