Continuity mistake: Rodney says that he picked up the money off the table when they were trying to escape from the police, yet if you look closely he never goes near it. And he never has another chance to pick it up.
The Shock Will Kill You - S2-E13
Continuity mistake: After Ralph drops down into the tunnel in order to lure the creature, Ralph stops in front of a junction box on the wall. In the shot facing the box head-on as Ralph gets one of his holographs, suddenly there's writing on the cover of the junction box. The writing is not part of Ralph's vision. (00:37:55)
Tiptoe Through the Penfolds - S5-E3
Continuity mistake: Although Danger Mouse is supposed to be on his own, when he turns a corner in the car, in the overhead shot, you can see Penfold sat next to him.