we need not assume that the thesis of substrate-independence is necessarily true (either analytically or metaphysically) – just that, in fact, a computer running a suitable program would be conscious

May I point to a critique by Brent Silby on Nick Bostrom's article?

"Computer - END PROGRAM !"
(from Star Trek, Ship In A Bottle)
http://en.wikipedia.org/wiki/Ship_in_a_Bottle_%28TNG_episode%29

thx Djiezes, though I haven't seen your clip I will surely go and read the critique.
as an aside, there is no doubt in my mind that the simulation argument is fundamentally flawed, primarily because of Wolfram's argument about the limits of computation. having said that, there still remains the argument of the many world interpretation.. still unresolved...

What on Earth are you two talking about?? *LOL* Debby likes the premise of this clip Wildy.

No! Don't hit the "Esc" key! It will end the world...!

Simulacron-3 (Counterfeit World) by Daniel F. Galouye (1964);

TV movie Welt am Draht (1973; director: Rainer Werner Fassbinder)