CSI: Crime Scene Investigation/Nightmare Fuel

Original series

 * CSI, original flavor, doesn't shy away from gruesome cadavers or their stages of decomposition. However, there are those who take the cake. Liquid Man,
 * And if that wasn't enough, a later season gave us the Amazing Bloat. You might never look at hot baths the same way.
 * The rotting juice from that man leaked through the ceiling and filled the entire house, and his decomposing, mouldy body had a brain that looked more like green jello than anything else.
 * Another victim was left for three days after being stabbed before the police got to the house. The guy was bloated almost beyond recognition and had to be POPPED in order to keep him from bursting inside the van.
 * The Miniature Killer is far and away the creepiest thing the series has produced thus far.
 * Meet Dr Jekyll, your friendly unlicensed surgeon who
 * Don't forget
 * The recent episode "19 Down" (aka the episode where ). Specifically, the freak of the week, who
 * Then there's the opening of the same episode, which gives us a nice time-lapse (with cuts) of a body stuffed into a plastic bag bloating, putrefying, and essentially melting.
 * 7:56 of the Fur and Loathing episode.
 * Is this episode about... furries?
 * Yeah. Yeah, it is.
 * The sixth season opener, with two bodies left to decompose melt in the trunk of a car. And Greg having to grope inside the contents looking for the drain plug... and getting (warning: severe Squick) for his troubles.
 * Try that young girl who jumped off the roof in a bikini. But dear, sweet God, the girl's legs HAD. NO. BONES. They were liquefied upon landing! And seeing all those people in the bus screaming as the girl hits the roof...
 * Whenever any of the guys cuts a corpse's finger off, removes the bone and put the finger on their own hand, similar to a glove, to get the print!
 * "4x4", with the bodybuilder who had that black goo behind or in his eyeballs.
 * The final part of the sitcom episode. It's all very kooky and staged until
 * Season Eleven gives us the debut of Squeegel. Brrrrrrrrrr.
 * in "418/427". Incredibly creepy pedophile. No matter how liberal you are, you'll probably be glad when
 * Part one and two of "Grave Danger" where And then  And then  And then
 * One scene in the second part involves hallucinating that he died within the box, and watches Robbins dissect him laughing all the while. And it's all from  point of view.

CSI Miami & CSI New York

 * CSI New York -- people getting gassed to death by exhaust fumes in the back of a cab. Knowing that the Nazis did something very similar before switching to Zyklon B makes it worse.
 * Whoever wrote the last part of the episode where it appears that the much-loved Lindsay Monroe is about to suffer the same fate deserves public castigation.
 * And so does whoever wrote the secondary plot of the episode "Heroes," wherein Det. Aiden Burn (dismissed early on season 2, after violating the chain of custody of the evidence in a serial rapist case) is brought  The imagery alone is enough to induce more than a few nightmares.
 * Until they reconstructed her face (which is creepy enough), they were treating her exactly the same as any other body, completely unaware of who she was. Hearing them talk about her in such a clinical way just emphasises the horror when they look at the reconstruction and figure out it was her...
 * That poor guy whose lower jaw (and most of the face below the eyes for that matter) was blown off by an exploding cigar.
 * Two Words: KING. BABY.
 * The entirety of Committed. Creepiest Bottle Episode ever.
 * The recent episode "Deep Fried and Minty Fresh" features a guy getting killed by having his head dunked in a deep-fat fryer. Of course, the Necro Cam shows it happen about three times. One sequence details the hot grease entering his trachea, burning it up and causing him to asphyxiate.
 * "Appendicitement". Waugh. Killer makes a bunch of people humanitarians without their knowledge.
 * One episode of CSI: Miami had a guy get knocked into a pool, the water of which was replaced some kind of horribly corrosive chemical. We're treated to pretty much a minute straight of the guy thrashing and screaming as the stuff eats away at him, and in the end he looks like one of The Skinless from Hellraiser (and is still sizzling away when the team arrive).
 * Episode 17 of CSI: NY, season 2. It starts off with a Oh, and we get some very pretty close ups of her, and it gets worse. We're later shown a montage of her  I think I need a hug.
 * It was almost a relief to know that that's what happened to her -- because the episode was entitled "Necrophilia Americana". The title alone gives enough disturbing mental images about the episode's subject.
 * In the CSI: Miami episode "Guerillas in the Mist" the bad guy of the week utilizes a powerful machine gun called that fucking liquifies its victims in graphic detail. Dear LORD, that's not a mental image I wanted...
 * Las Vegas Season 5 Episode 8 "Ch-Ch-Changes"... the discovery of the second body. Full stop.
 * "Sqweegel," from Season 11 Episode 4. Essentially an unholy combination of Gollum and a contortionist in a Gimp suit... uugggghhhh.
 * Yeah, it didn't help that he moved like a lizard and at the end said
 * Even worse, Sqweegel is a crossover from the CSI creators book series "Level 26," so we're never going to get any resolution.
 * What about the episode where the first bit of the victim we find is just a head? A very mangled head at that. And if that wasn't bad enough, we find that the victim died from being buried up to their neck and letting wild dogs kill him...
 * The sub-plot of the recent episode "Unleashed" was purely this. It involves Plus, right after Nick and Robbins  Absolutely brutal, especially if you've been a victim of cyberbullying.
 * There've been a lot of freaks and psychopaths on the CSI series over the years, but the guy from the season 4 episode "After The Show" has to be one of the creepiest. From the haunting, echoing music played on the cold open and the way he obsessively stares at the victim on TV in the dark, his weird obsession with eyes, the way he stares at Catherine and tries to manipulate her, and his final Villainous Breakdown... yikes.
 * "Pirates of the Third Reich", especially the surgically conjoined twins scene. Just...*shudder*.