
Visible crew/equipment: In the catacombs after Indy passes the picture of the Ark Of The Covenant and approaches the next wall with the lighter, (when the screen goes upwards a bit) the shadow of a boom mic can be seen dropping into view at the top of the lighted wall. (00:31:40)
Chosen answer: Les Bubb worked on the Harry Potter films as a voice actor for minor characters. There's no exact indication who he played, but it's likely he was the voice of various portraits, background characters, and other characters who were either unseen or represented by special effects.