When the Chinese official introduces his assistant he pronounces the assistant's name as Wang (pronounced like bang with a W) but there is no such sound in Chinese. Therefore the assistant's name would have used a long a and sounded closer to Wong rather than the pronunciation that was heard.
When Mai-Lin pulls the driver out of the car after she and Darian are hit after making the car invisible, the driver, who is supposed to be unconscious, moves his legs out of the car himself.
Claire has Thomas Walker focus on the sound of the metronome, but it's already been established that he's deaf, so what purpose did it serve?
Despite their recent move to the Bureau of Weights and Measures, which played a major role in the recent, prior episode "Immaterial Girl," the Official's office has the Health and Human Services seal up in this episode.
When the eyes are Quicksilvered, they are not just supposed to appear black, but appear gone. In several instances in this episode, the eyes that are Quicksilvered have reflections of lights on them as they appear to be black lenses.
After they find the sacred needles, Darien sheds his Quicksilver before Charlie. But- in the video replay- Charlie walks into frame already visible as Darien becomes visible.
In "The Camp" Alex lists all of Hobbes former company assignments and NSA is on the list. Darien asks him in this episode if he learned a particular skill as the NSA, he claims that he never worked for them.
The hidden camera is in Darien's hat, yet when Alex sees the babies, the shot is from a much lower spot and from a different location from where Darien is standing.
When Odets is holding Fawkes at gunpoint, the gun that John Grey is aiming is clearly a cap gun, as the barrel is filled in rather than a hole.
When the informant is hit with the kusarigama, it changes position between shots.
At 41:25 as Claire is giving Darien his shot. There is a camera visible in the shot as it pulls back, at the lower left.
At 21:06 as Claire tries to open the door to the padded room. The shadow of the boom-mic is visible at the top of the door, just above her head.
The version of this episode that the fans didn't vote for (the alternate choice for Hobbes) did in fact air in most markets in syndication. On the Region 2 DVD release of Season 1 (sold in two box sets) they featured both openings for this episode. The remainder of the episode after the teaser was the same either way.
At 2:03 there is a shot of the three Arnauds as they are shooting at Darien. The one of the right is missing half of his body, his leg is missing and most of his arm is gone. The Arnaud on the left is missing part of his arm.
When the Official is giving his money problems talk, he sends Eberts to stand by Darien. In the background we can see Eberts give Darien a funny look, so Darien spikes his hair. But when the shot changes to a close-up of Darien, his hair is flat and he spikes it again.
At 5:24 the reflection of the camera and operator is very visible in the window, just ahead of Darien.
At 35:29 Darien tells Bobby that the other four test subjects were gone. But there were only three remaining subjects.
Bobby slams invisible Darien onto the table, causing the glass top to shatter. Yet none of the items on the table even moved, when Darien would have hit them before hitting the glass.
At 8:48 as Juan Arias walks into the main room the boom-mic pops down into the shot, just above the door.
At 13:06 as Darien rolls over, Bobby's shoulder is visible next to him. Yet when the shot changes to Bobby, he is back at the gate, before he even sees Darien.