When the Nerd hits the NES game with a whip, he promptly says "Oh shit!". His reaction was not scripted. James Rolfe accidentally hit a studio light, which then fell over.
The DVD version of the episode includes a review of Indiana Jones and the Last Crusade (1991), the Taito NES game.
This episode was made to coincide with the release of Indiana Jones and the Kingdom of the Crystal Skull (2008).