Darth Vader - Power of the Dark Side - S1-E2
Continuity mistake: Just before Vader is revealed, the Rebel soldier on the left side of the tunnel with the mustache is shown holding his blaster with his right index finger on the trigger through the guard. Then in the shot from behind Vader just after he ignites his saber, the same Rebel is shown, but now his left index finger is through the trigger guard. (00:00:09)