When i was a kid I had some D&D lite board game, it came with a really corny video featuring these guys, and some Christopher Lee type 'dungeon master'. Some of that video winds up in these clips. I remember thinking it was really funny that whenever they were running around in a dungeon, their shoes made sounds like they were on a basketball court.
Little details like that betray the whole atmosphere of a scene, undermine the credibility of a production and make it harder to suspend disbelief, which sucks cause that's my main way of fighting illusions and finding hidden doors and shit.