Ghost Hunters, Funhouse?

On this episode of Ghost Hunters, TAPS was told that a New England bar was experiencing weird things, like glasses moving, and faces being seen in mirrors. So the whole Ghost Hunters team drives hours up to this bar, expecting at least some type of paranormal activity, because the owners who called them seemed really, really creeped out.

So they get there, the owners show them around, they set up their equipment, and they're all ready to go. They turn off the lights and start to look around.
After awhile, they hear a noise. At first it sounds like a voice, so they follow it to the where they think it's source is. They track it to the ceiling. Perplexed, they lift up a ceiling tile and discover speakers, which are the source of the noise.

Stunned, they take note of this and keep looking around. All of them are generally nice guys, and just assume this is a mistake, old joke, or one time thing.
They keep looking around, until one team member mentions seeing a face in one of the mirrors. Remembering the speakers, they pull on the mirror, and find it swings open like a door, with a lighted mask behind it, creating the illusion that when you look into it, you see a face.

Throughout the night the Ghost Hunters find several other tricks, in the walls, ceilings, and floors. They end up stopping their search early.
Later when they confront the owner with these tricks, he says 'oh yeah, I forgot to tell you about that.'

So, in conclusion, these guys were basically just a-holes who wanted to trick the Ghost Hunters and make them think they had a really creepy bar.