These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Zak: Hey, I think I got the wrist action down! *beat* I should just not talk...
Harsher in Hindsight: Quite a bit of episodes seem like this after the location they investigated that had a lot of activity gets destroyed or demolished soon after.
The Remington Arms Factory is being torn down by the City of Bridgeport due to safety hazards on the site. The Ghost Adventures Crew was the last team to investigate the premises
Subverted with the Linda Vista Hospital episodes, the hospital was bought in 2011, but renovations are being made to turn it into a senior apartments complex.
The Wolfe Manor is demolished as of November 2014 due to unsafe conditions that the owner could not repair on demand from the City of Clovis.
The old Fort Chaffee complex in Fort Smith, Arkansas was burned to the ground in 2012. The Ghost Adventures Crew was the last team to investigate the location.
Also subverted with Ashmore Estates in Ashmore, Illinois, despite massive damages done by tornados, the owners announced that the building will be repaired and renovations will be made to accommodate ghost hunting events.
The Central Unit Prison in Sugar Land, Texas, is a subversion, as the Ghost Adventures Crew got permission to investigate immediately after the prison was closed down and being prepped for demolishing by the Texas Department of Justice
The Black Moon Manor is a notorious case of the Ghost Adventures Crew causing the demolition after the episode aired, when the owner of the property received a call from the descendants of the Eastes family that owned the home. Due to pressure of the City of Greenfield and the Eastes family descendents, the property was torn down.
Any friendly interaction between Zak and Nick can come off as this when Nick abruptly left Ghost Adventures to his own show and giving fans a saddening vibe that he's no longer friends with Zak and Aaron.
To be fair though, during the drive to the Zozo Demon house in Oklahoma City (His last appearing episode in terms of time of filming) at the beginning of the episode, Nick did get extremely upset with Zak about doing another case with an Ouija Board, claiming he just got all the stuff from the Exorcist House in St. Louis out of his system. He was also the primary person, along with Darren Evans, using the Ouija board, so his leave, along with the birth of his daughter, is justified.
Ho Yay: Accidental or unintentional, but hilarious nonetheless.
In one example, Zak is trying to find the source of a smell (they're in the dark with only night vision.)
Zak: Aaron, come here. Turn around. *sniffs* No, it's not you...
Aaron: Pfft, I smell pretty.
Another time, while Nick and Zak are walking around a snake-infested hillside:
Zak: [if he gets bit by a rattlesnake] Will you suck the poison out of me?
Nick: I don't want to suck anything out of you!
Iron Woobie: All three of them. Aaron in particular, for having to go through all of this, despite having these ghosts ruin his marriage.
Narm: Any time Zak attempts to intimidate, enrage, or otherwise bully a ghost, it's Narmtastic.
Also, apparently every anomaly in photography, lighting, sound, or temperature is caused by a ghost. Every time it gets a little colder, the lights gets slightly blurry, they hear a noise, or see something (conveniently off-camera), they all freak out, run around, and scream. It's hilarious. You can't yell, "dude" over and over again and expect it to be taken seriously.
A large chunk of viewers watch the show solely for this reason.
Never Live It Down: While they were at the Ancient Ram Inn, Zak got confused and said he was touched by the incubus (a male demon), as opposed to the succubus (female demon). He's been repeatedly ribbed about this ever since.
"I'm gonna put it between my legs cause I hear that's where the incubus likes it."
It kinda gives the word "ribbed" a whole new meaning.
Tear Jerker: It was revealed by Aaron that after investigating Bobby Mackey's Music World, ghosts had followed the three of them home, and even led to the end of Aaron's marriage. The ghosts tormented his wife so much that even though they were best friends, they had to call it off. Goes with Kick the Dog on their third trip to Bobby Mackey's, the EVPs revealing the ghosts taunting Aaron.
At Gettysburg, they got an EVP of a young woman saying 'I'm pregnant.' The team believes it to be the spirit of Jennie Wade, the only civilian casualty of the battle. It adds another layer of tragedy to an already tragic event.
Zak's grandmother died while they were investigating the Winchester Mystery House. Made even worse in the ending with it highlighting a photo of Zak that he gave to his grandmother (Who never missed an episode of her grandson's show, mind you.).
When investigating Gary Galka's House, it's supposed to be a true tearjerker, including Gary and his wife crying through the interviews. (Though to be fair, it is about their deceased daughter that they are trying to find closure for)
During the "Aftershocks" episode about the Yorktown Hospital its revealed that Spirit (the donkey that scared the crap out of Zak when the GAC visited) was killed. What makes it worse is that Spirit's owner believes the killer is a living person and not a spirit; according to the owner there are people in town who feel he is taking advantage of the spirits in the hospital.
Nick's departure from the show. While many fans are happy for Nick to continue his own show, it gives a rather saddening vibe that Nick may not speak to Aaron or Zak anymore. It's even more uncomfortable when Zak didn't give Nick his regards for his departure and his new plans until hours later of his announcement. It also doesn't help that despite fan's theories of Nick's departure being because of his family, Nick confirmed through his Face Bookthat wasn't the case..