Yes, yes, we love surprises.

Jim Bell, NBC’s executive producer for the Olympics, is promising a big moment during tomorrow night’s opening ceremonies in London.

Bell said, “One moment I think will be among the more astonishing and memorable in Opening Ceremony history, one that people will be talking about for years to come.”

Of course, the all-time Opening Ceremony surprise occurred when Muhammad Ali appeared from nowhere to light the flame in Atlanta in 1996.

What will be Friday’s surprise? Queen Elizabeth, at age 86, vaulting up the stairs with the torch in hand?

Actually, the drama of the big moment could get ruined for a lot of people in the U.S. The Opening Ceremony will be aired on tape on NBC. With a five-hour time difference to the East Coast, there’s a good chance the surprise will get out.