Visible crew/equipment: After taking the enzyme, Mckay is talking to himself as he dials the gate. When he goes to push the centre button, an arm moves on the opposite side of the DHD. (00:09:35)
Visible crew/equipment: When Novak is talking with Caldwell on the comms about beaming a nuke inside the ship, you can see an arm in Hermiod's "butt" moving with Hermiod. (00:08:30)
The Eye (2) - S1-E11
Visible crew/equipment: In the beginning of the show (before the intro starts), when you look out the window you can actually see two people shaking the small trees in the storm... Come to think of it, why would there be trees in the first place? How could they survive out there if Atlantis submerged in the ocean? (00:02:21)
Answer: Those are actually suits that protect from hazardous chemicals. They are cheaper for the prop department and look nearly the same as biohazard suits. A real biohazard suit would indeed have a helmet that seals to the neck.
Grumpy Scot