Fringe has been a wild ride so far. Like any good sci-fi show, it plays with impossibilities and takes us to the land of "What If?" But the show also gives us a heavy dose of science gone wrong, and when things go bad in the Fringe world, truly freaky events occur. Sometimes they're gross, sometimes they're odd, and at other times they're disturbing enough to make your skin crawl, and maybe make you leave a little light on before you go to bed.

Here's our list of the sickest, craziest, most unsettling Fringe moments so far.

Melting Faces

Episode: Pilot

The series didn't waste any time getting into the oddness. In the very first scenes of the pilot episode, the show gets gross, setting the tone for what was to come in the rest of the series.

It all started on Flight 627, from Hamburg to Boston, flying through a thunderstorm. The passengers inside were already unsettled by the lightning, when one particular passenger starts to freak out. Just a case of flying jitters? Nope, it's far more gruesome than that.

The sweaty fellow pulls out an insulin pen and injects himself in the stomach. Moments later, the dude jumps out of his seat, and his skin bubbles and liquefies off like molten caramel. As if that weren't bad enough, the guy's condition is highly contagious, and it quickly spreads to everyone else on the plane, causing their skin and muscles to literally melt from their bones.

Brain Melting & The Hand of Light

Episode: The No-Brainer

Seventeen-year-old Gregory Wiles is working at his computer, when a mysterious window pops up on his screen, prompting him to click a button. Like an idiot, the kid actually clicks it (haven't we all seen enough viruses and malware to know better?). Strange images start to flash on his screen, and the boy is drawn into a kind of hypnotic state. Then something begins to protrude from computer the screen—a hand made of light. The shining appendage slowly reaches forward and grabs poor Gregory in a face lock.

So Greg ends up dead, and the Fringe team is called in to investigate. In the lab, Walter drills a hole in Gregory's head and drains his brain pan of the gooey liquid inside. Walter finds that Gregory's brain was liquefied, but he's not quite sure how. He does, however, have an hypothesis that perhaps young Gregory may have contracted an advanced form of syphilis that baked his brain. The true culprit? A computer program that produces a series of images that rots your brain, kinda like YouTube.

Impromptu Brain Surgery

Episode: Grey Matters

The Fringe writers seem to have a thing for brains. After giving us the previously mentioned episode full of brain juice, they came up with a story all about swapping brain pieces. The episode opens with a mental patient undergoing involuntary and hastily performed brain surgery at the hands of Thomas Jerome Newton. While Newton gets the brain piece he came for, he doesn't have time to close up the poor guy (one wonders if he would have bothered even if he had the time). Newton's quick escape leaves the patient with his brain hanging out of the back of his head, while he's still awake.

Innovative Throat Slitting

Episode: The Dreamscape

This episode was really more about nightmares than dreams. It featured drugs with psychophysiologic effects, which basically means the ability of the mind to create physical effects in the body. Some clever folks were using these drugs to kill people, including Mark Young, a Massive Dynamic employee who died from a massive freakout because of butterflies with razor-sharp wings that cut him. The butterflies weren't real, of course, he just imagined them. But his brain made the cuts real.

This all culminates in the death of a captured informant, Morales, who gets slipped the drug while being held in a hospital. A nurse walks in to check on him, only to see Morales' throat slitting itself, opening from the inside out. It's one of the odder moments from early days of the series, and it certainly took some kind of macabre genius to think that up.