That's the worst offender? You obviously haven't seen Dexter. I recall a scene in the third season where he was playing Halo 3 with space invader sound effects. And it wasn't just an ambient "oh he's playing video games" scene. The game was the whole focus of the scene. Even someone who's never touched a video game would see an inconsistency with a grenade explosion making a sound effect from 15 years earlier.