The Man Who Wouldn't Tell - S2-E20
Deliberate mistake: In order to knock down Ted at the laundry place, Diana opens a bag filled with clothes that are supposed to fall on him. The bag is too low plus the actor is away from the bag, so when she opens the bag he crouches, then grabs the clothes and pours them on top of him and falls down. It's all very lame.
The Man Who Wouldn't Tell - S2-E20
Continuity mistake: After the lab explodes, the cameraman places his hand next to the peeping hole. A shot later, it's lowered.
The Man Who Wouldn't Tell - S2-E20
Revealing mistake: When the lab is about to explode and the room shakes wildly, none of the stuff moves, revealing the camera trick.
The Man Who Wouldn't Tell - S2-E20
Continuity mistake: When the episode starts, the cameraman's left hand is lowered. A shot later, it's on the camera.
Continuity mistake: When Diana spins around, the computers are on. When she transforms herself into Wonder Woman, they're off.
Revealing mistake: Wonder Woman is in a control room with walls and a hard floor, but when she starts jumping around to avoid the lethal red light, the walls and floor swap to wrinkled and bending inwards, revealing it's a room covered with safety mats.
Continuity mistake: When Wonder Woman runs to the parking space where the Polaroid lies, there's an old couple walking by who vanishes between instant cuts.
Continuity mistake: Wonder Woman has the bad guy lassoed; the rope is running below the coat of arms embroidered on his jacket. A shot later, the rope is above it.
Continuity mistake: Diana is wearing boots, but when she falls in the pit, they swap to black sneakers. When the gas comes out, they swap back to boots.
Continuity mistake: Wonder Woman stops a tank with its tracks moving, but when the shot changes, they're still despite the motor running. This swaps back and forth.
The Murderous Missile - S2-E22
Continuity mistake: When George falls off his motorcycle, his pants are wet and covered in mud. When Wonder Woman catches him, they're dry and clean.
The Murderous Missile - S2-E22
Revealing mistake: The cables holding the missile are very, very obvious.
Continuity mistake: When Trevor holds the photo, there's nothing behind. In further shots, an envelope has appeared.
Continuity mistake: Trevor holds the Polaroid with his left hand, but in the wide angle, he holds it with both hands.
Continuity mistake: The first ambassador is given 3 Polaroids; he drops one on the road and enters the car where he now has the same 3 photos again. Then in the close-up, he only has two; the one he dropped is missing, but a shot later he's got all 3 again.
Continuity mistake: By the car, the first ambassador holds the three polaroids in a fan-like manner, but a shot later they're stacked. This swaps back and forth.
Continuity mistake: At the party, when the first ambassador watches the photo of him and his dead wife, the number of hands he holds it with swaps between shots. (00:01:40)
Continuity mistake: When Wonder Woman runs around the rooftops, the sky is cloudy and grey. When she jumps off to the ground, it's sunny. Then she lands, and it's back to cloudy.
Continuity mistake: When Diana exits the dark room, an officer immediately enters to check. A yellow tray suddenly appears, plus a big photograph on the right.
Continuity mistake: When Diana opens the door, there's just a man cleaning the floor several metres ahead. A shot later, a man is rushing behind her. (00:04:50)
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.