Submission + - The Firefly Shakespeare episode that never happened (shadowlocked.com)
“Joss Whedon revealed a previously unknown piece of Firefly trivia. In his own words:
"I had planned to do an episode of Firefly with Amy [Acker] and Alexis [Denisof] and James Marsters as part of a travelling Shakespeare troupe...But, I don't know if you know this, but we were cancelled..."
Fred and Wesley and Spike performing Shakespeare on Serenity? Best. Hypothetical. Episode. Ever.
[More at the link]