Heaven is in Your Genes - S3-E6
Revealing mistake: While Ralph is in mid-air, en route to the airport cafe, something dips into view at the top left corner of the screen. Then when Ralph takes off from that cafe, two shots later as he's in mid-air, we can see the shadow of the helicopter filming the background stock footage, but it's been flipped so the helicopter is flying backwards, and when more background footage is shown again the helicopter shadow is flying properly. (00:13:15)
It's All Downhill From Here - S2-E16
Revealing mistake: While Ralph is invisible and eavesdropping on Klein's conversation, when Ralph picks up a pencil and taps it on the desk, we can see the stiff wire attached to the pencil moving up and down, at the left side of the screen. (00:27:35)
There's Just No Accounting... - S2-E18
Revealing mistake: After Ralph tells Bill that the kidnappers are planning to take another child, when Bigsby walks out of the Sherwin house, in the next shot just as Ralph flies off we can see the stunt's springboard between the bush and the tree. (00:31:05)
Revealing mistake: When Ralph stops the hijacked train before it reaches the city of Bakersfield, due to the close proximity of the camera it's too obvious that Ralph's footwear has been altered for the stunt, as he glides across the tracks. (00:44:30)
Revealing mistake: When Ralph blocks Hydra's rocket from its target, in the closeup as the rocket hits Ralph's abdomen the thin stunt wire is visible at the rocket tail. Then while Bill is fighting with Hydra, when Ralph is in mid-air heading to Bill the stunt apparatus is visible at Ralph's waist. (00:40:00)
Don't Mess Around With Jim - S2-E3
Revealing mistake: While they're on Beck's jet Ralph uses the suit's telekinetic powers on the ice-filled cup, and Ralph tells Bill he'll do it again with a magazine, then when it cuts to the first closeup of the magazines the stunt wire attached to the book is visible. (00:15:45)
The Two-Hundred-Mile-an-Hour Fastball - S2-E1
Revealing mistake: During Ralph's tryout for the team, when the catcher yells, "Come on, skinny bones, try to put one right there...," the stunt wire is visible behind the catcher in this shot as well as the following shot, when he flips over. (00:10:10)
Revealing mistake: At the paramilitary base, after Bill tells Bunker he has "a real cute bivouac goin'," it cuts to a shot of Ralph searching for Bill's location, and the stunt apparatus is visible at Ralph's waist area. (00:21:30)
The Shock Will Kill You - S2-E13
Revealing mistake: While Ralph, Pam, and Bill are at the motel, Ralph wraps up all the metal plate covers and cutlery inside the bedspread, then when Ralph walks back and forth we can see the wires attached to the bedspread bundle as it moves. (00:18:15)
Divorce Venusian Style - S3-E1
Revealing mistake: When Ralph reaches the Norma Rae freighter after the explosion, while Ralph is inside beside the hole, in several shots we can see the edge of the water tank set at the right side of the screen. (00:42:20)
Revealing mistake: When Ralph picks up the guy who was stealing mustangs and takes off with him over his shoulder, while they're in the air the cushion under Ralph is visible in the closeups. (00:18:00)
Revealing mistake: When Bill is pushed out of the helicopter and Ralph rescues him in mid-air, its obvious in some shots that it is two sky-divers dressed as Ralph and Bill. Firstly you can see the parachute back-pack bulges on both men. Also the wind is blowing up on Ralph even though he isn't meant to be descending.
Reseda Rose - S1-E6
Revealing mistake: During the meeting on the beach, while Bill remains on the hill Ralph flies to the surfaced submarine, and in Ralph's closeups on the sub the crinkled black set wall behind him is painfully obvious.