http://www.gametrailers.com/player/33452.html Better quality version courtesy of Gametrailers. I don't think MGS1 is replayable, but rather that Shadow Moses is one of the visitable locations in the game. (No, the Mideast is not the only setting in the game. At least, that's what we're told.)
when i put 5 bucks down on MGS4, they gave away a free dvd with trailers and video histories. it also contained the password to the PS3 online beta. pretty cool.
That looked like a flashback to me though, since Snake wakes up at the end. The Beta is pretty fun, it took me a while to get used to the controls since they arent they same as in the other games.
I thought that also, but if it were a flashback, where are the guards? Why is it daylight? I think it's a playable area.