I dunno about u, but that 30 second scene is kinda worth it though. Since Mark was trying his hardest not to laugh. (by chugging in more *******)

Why he's bored? Probably because he's not used to food in 21st century. Were there Shwarma in the 40?

Anyhoo, the significance of the 30 second scene was a nice way of saying that even as a team, they have no idea what the hell to talk about. But they're just following Tony since he almost died and just following his wish. Call it a bad group date.

To begin with, this is actually homage to the first comic book of the Avengers. Yes, in that one (you can find the omnibus version should you wish to read it) Loki's true intention was to turn the Hulk into everyone else (since he believes it's a "mindless beast".)

Also, if you remember the end credits in Thor (Or even when Thor was in captive because he couldn't get the hammer), Loki is famous for being a sort of "invisible satan" figure. I take this based on

- Loki being able to communicate worlds apart without the Tessarect opening a portal (or better through the Scepter.
- The upside down turning of the camera when the shot is placed on the scepter (a reference to how the world is wrong when it's upside down)
- Banner holding the scepter. (If you think logically that Banner is in control, why would he want to hold the scepter? He can just turn himself into the Hulk and the whole lab would be destroyed still.)
- The last look from Banner when he looked at Black Widow. That's Banner still in control but he can't take it the mind games with Loki. Besides, how can anyone justify Banner screaming "your life!" when he spoke to Black Widow?