Reseda Rose - S1-E6
Continuity mistake: While Bill and Ralph drive around checking on the FBI's list of addresses, in the closeups the mirror Ralph uses for his visions is attached to the sun visor with metal clips, but each time Ralph pushes the visor back up the metal clips are gone.
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.