Blake's 7 (1978) - 166 mistakes in entire show

Continuity: When Vargas beams up to the Liberator just ahead of Blake, Gan & Vila, he challenges them when they arrive from the other side of the room - by stepping out of the teleport bay. But they're standing in the teleport bay, and Liberator has only one. So exactly where is Vargas standing?

Continuity: During Blake's first encounter with Cally, the smudges on the front of his tunic (including a big chalky footprint left by her boot) disappear, reappear and rearrange themselves several times between shots.

Revealing: When Tarrant, trying to call Dayna, falls against the flight deck console, the whole thing tilts visibly.

Revealing: The double-bladed axe one of the Decimas uses to attack the station windows is wobbling as he strikes with it. Small wonder he's not getting far at breaking in, with a weapon made of rubber.

Continuity: At the end, Blake teleports Vargas, who's wearing a long purple robe, out into space. But the figure we see materializing in space isn't in a robe. It appears to be wearing a spacesuit instead.

Revealing: When Tel Varon walks in front of the wall screen in the justice data center, a flash of gibberish lettering and a blue matte line both appear briefly above his head.

Revealing: Just after Avon slips into the access tunnel and the prisoners close the hatch behind him, the star field in the window shakes and wobbles.

Plot hole: Travis, dressed up as the supposedly disabled dissident Shivan, fools Blake and the rebellion leaders far too easily. His head bandages completely cover his mouth (how did he eat?) and his glued-on glass eye is so obviously fake it's laughable. If we noticed, why didn't they?

Revealing: When the Federation troopers blow open the interrogation room door, you can see a brief glimpse, through the smoke, of the thrown sledge hammer that was used to make the door fall in.

Continuity: Just before Scorpio crashes, Avon grabs Orac and teleports to safety. When they're still aboard the ship, Orac has several wires hanging loose from underneath. When they materialize on the planet, however, all the loose wires are magically repaired and no longer hanging.

Continuity: When Jarvik and Dayna teleport up at the end, her bracelet disappears as they materialize in the teleport bay, but is back when they reach the flight deck a few seconds later.

Visible crew/equipment: When Avon is questioning Muller's wife at Xenon Base, an equipment shadow moves across the top of his head.

Factual error: The Ultra may be expert collectors of knowledge, but they have their facts wrong about Avon, who tried to steal 5 million credits from the Federation banking system. The Ultra think it was 500 million.

Revealing: When Liberator moves into view on Servalan's screen and stops, a bad special effects matte causes the stars behind the ship to keep on sliding to the right.

Continuity: Provine shoots the rebel guarding the rocket in the chest. But later, when his body is found, the man is bleeding from the mouth instead, and the blood pooled on the floor beside him changes from beside his head to above his head between shots.

Revealing: A very poorly executed special effects matte causes the star patterns behind the 3 pursuit ships to slide in opposing directions at the same time.

Visible crew/equipment: When Nebrox is relaxing in a chair on Scorpio's flight deck, large bright yellow power cables are visible running from the console behind him and across the set floor to the right of the shot. Maybe they were jump starting the space ship?

Revealing: Jenna moves down the corridor on her way to the hold with her Liberator gun in hand. The weapon lights up and flashes several times, even though she isn't firing it.

Plot hole: When the Liberator returns to the planet, Travis remarks that their orbit is too far away to use their matter transmitter. Since Travis had only found out that they even HAD a matter transmitter (which the Federation hasn't managed to develop yet) when he spoke to a technician just before that, how would he know what the range was?

Visible crew/equipment: That main console! The uppermost of the flight consoles of Liberator isn't fixed down in this episode, and wobbles almost every time it is touched, and not just small wobbles. Watch for the 10 seconds or so after Jenna says "Eventually I might just be able to get her to start and stop", and you'll wonder how she didn't knock the entire prop off whatever it's sitting on and onto the floor.