Teleportation is a staple of both fantasy and science fiction alike.

When applied to fantasy, it's often a stock magic power. A person may have this ability as a stock superpower, and can literally appear and disappear at will. Or it may be a magic spell anyone can learn, or requiring a magical artifact in order to be able to teleport. Expect villains to use their teleportation abilities extensively. Heroes may be able to teleport, too, but they don't seem to use it much, even when facing a teleport-heavy villain.

When applied to science fiction, expect some wacky technobabble to explain how it works. For example, disintegrating your body's atoms and reassembling you somewhere else -- very unpleasant. x_o;; (That is how teleportation, known as "beaming", works in Star Trek.) Or, via the use of wormholes -- kinda like regular portals, except this portal encapsulates your entire body. (Half-Life's teleportation is explained like such.) Almost always requiring a gigantic teleportation device to teleport you anywhere.

I'm fascinated with this ability to instantly go wherever you want to go at an instant. Being able to go from point A to point B while skipping the path between them. I guess, that's one of the reasons why I like playing as Ash Prime in Warframe, currently my main Warframe which I use in every mission I go to these days. Ash's Teleport ability allows him to instantly teleport to allies, enemies, and, as of the recent patch, anything with a health bar such as breakable containers. (Sure, I'm aware that there are other Frames that can also teleport as well, such as Loki, Nova and Nezha.) Teleportation is rarely a power readily available to players, probably because of how easy it is to skip large chunks of the level with it: just teleport to the exit and, bam, level complete! Even when the players are given such ability, limitations are imposed, such as maximum distance, the power cost to cast it, how many times you can cast it, etc., in order to keep players from abusing it. From what I've heard, VR games have teleportation as a necessity, because that's the only way players can even move around.

As awesome as teleportation may be, there are dangers that come with it as well. (Of course, because there's gotta be some kind of conflict from it, too.) Because you can't see your destination beforehand, you wouldn't know if it'll be safe or dangerous there. In video games, if someone teleports to where another person happens to be standing, that other person is instantly gibbed; such a phenomenon is called "telefragging" and may even be weaponized by players. (This is how you kill Shub-Niggurath in the final level of the first Quake game.) The teleport itself also has its dangers. Mishandling it could lead to unpleasant results, such as your various body parts ended-up teleported to different places. x_x These are considerations that need to be taken into account when an actual teleportation device is to be built in real life.

In horror movies, when teleportation is involved... yeah, expect the technicalities of it to become the horror catalyst for the rest of the movie. That's what happened to the main character of The Fly, both the original and the remake.

Once, I saw a Malay comic posted online that gave me the chills every time I think of it. o_o A guy volunteered to take part of this teleportation experiment. The device disintegrated his body and reassembled him in another location in the lab. Except... something's wrong. In reality, the teleporter killed him. His reconstructed body is a clone, with all his memories and personality. Now a ghost, the guy helplessly watched as this clone continued with his life, even married to his love. The lab itself declared the teleportation a success; since he's unable to tell them that something went wrong, the world continued to believe that nothing went wrong during the teleportation process.

While teleportation may be an awesome thing to have in fiction, in real life, I guess it's best to stick with more traditional means of transportation. >_>;;