Mind Stealers from Outer Space: Part 1 - S2-E10
Revealing mistake: When the couple in the woods is paralyzed by the aliens, they can't help but move all the time, and even the woman's arms change positions between shots.
The Man Who Made Volcanoes - S2-E9
Revealing mistake: The scientists are watching an earthquake on a mountain with a Richter magnitude of 8.4. However, the rocks don't move a single inch, revealing it's a camera trick.
I Do, I Do - S2-E8
Revealing mistake: When Wonder Woman starts running down the golf course chasing the buggy, one can tell it's a stunt woman.
Mind Stealers from Outer Space: Part 1 - S2-E10
Revealing mistake: When the truck rolls down the hill, it crashes against another truck, which happens to match the shiny red colour of the original truck that went over the hill (not the faded red truck that we saw falling). Seemingly, it belonged to a first take.
The Bermuda Triangle Crisis - S2-E4
Revealing mistake: When Wonder Woman spins to transform from her wetsuit back to her costume, it's the previous transformation played backwards. Check how she moves counterclockwise and how her hair moves unnaturally.
The Man Who Could Move the World - S2-E3
Revealing mistake: When Ishida lifts the phone up in the air using his mind, the cable is visible.
The Return of Wonder Woman - S2-E1
Revealing mistake: When Wonder Woman launches the robot away, the actor playing him is swapped for a rubber doll that bends awkwardly.
The Return of Wonder Woman - S2-E1
Revealing mistake: When Trevor's copycat is about to punch Wonder Woman, he is replaced by an obvious stunt double. The shot then cuts to the real actor, which underlines the difference between both.
The Return of Wonder Woman - S2-E1
Revealing mistake: The jet is supposedly taking a nosedive, but one can see the horizon line behind is also tilted, revealing the camera trick.
Formula 407 - S1-E12
Revealing mistake: During the fight in the lab, Trevor's stunt is noticeable.
Formula 407 - S1-E12
Revealing mistake: At the Ambassador's residence, when Wonder Woman jumps out of the balcony, the stunt trampoline's black canvas, bouncing upwards, is perfectly visible.
Formula 407 - S1-E12
Revealing mistake: On the beach, Wonder Woman's stunt is noticeable because of her shorter hair.
Revealing mistake: When the explosions go and the place starts to shake, neither the trees outside nor the objects in the lab move an inch, revealing the camera trick. Later on, the group walks towards a table and things do shake.
Wonder Woman vs Gargantua - S1-E7
Revealing mistake: When Gargantua grabs Steigler, he is replaced by an obvious doll with stiff hands and rubber legs that bend awkwardly. (00:15:01)
Wonder Woman vs Gargantua - S1-E7
Revealing mistake: When a man runs towards Gargantua and is launched upwards, one can see the trampoline the stuntman uses.
The Feminum Mystique: Part 2 - S1-E6
Revealing mistake: Wonder Woman arrives at the island gardens, and the floor she stands on has a protruding object. Then the bad guys throw a smoke bomb at her. The shot swaps back to Wonder Woman, and an explosion occurs right where the protruding object was. (00:21:35)
The Feminum Mystique: Part 2 - S1-E6
Revealing mistake: When Wonder Woman gathers with the rest of the girls, there are black spots used as actor marks on the floor. There's one where Wonder's mother walks to and stops at when she arrives.
Fausta, the Nazi Wonder Woman - S1-E3
Revealing mistake: When Wonder Woman fights against Mueller, he is replaced by an obviously younger and thinner stuntman.
Fausta, the Nazi Wonder Woman - S1-E3
Revealing mistake: When Wonder Woman launches a thug up in the air and inside a crate, one can see the glaring safety cable that holds him up.
The Starships Are Coming - S3-E15
Revealing mistake: The old man in grey pyjamas who is launched by Wonder Woman is replaced with a much younger stunt.
Answer: The transformation twirling was invented for the 1970s TV series only, to explain her quick change from Diana Prince to Wonder Woman. However, it would have been nice to do a little spin homage in the movie.