''Laserblast'' is a 1978 low-budget sci-fi movie.

The movie begins with two aliens landing on Earth in pursuit of a third alien. After a pathetic attempt to hide behind a bush, the third alien's pursuers unceremoniously disintegrate him and then leave. Short movie, huh?

...Well, [[YourPrincessIsInAnotherCastle not exactly]]. See, the bad guy alien was carrying a [[{{BFG}} rather large]] laser cannon with him, which the other aliens neglected to pick up (we get to see their boss flip out at them over this later). Said cannon is later found by Billy Duncan (Kim Milford), a teenager who's perpetually picked on by bullies. Billy then starts using the cannon to gain revenge on those who wronged him. The laser cannon turns out to have an evil influence over its user, because Billy not only grows addicted to the cannon's destructive power, he also starts to undergo some kind of strange mutation. Meanwhile, the aliens have realized their mistake and are heading back to Earth to retrieve the cannon...

This was one of the first film scoring assignments of Music/JoelGoldsmith ([[Music/JerryGoldsmith Jerry's]] son), who went on to become the musical voice of ''Series/StargateSG1'' and its spinoffs.

For the ''Series/MysteryScienceTheater3000'' episode see ''[[Recap/MysteryScienceTheater3000S07E06Laserblast here]]''.
!!''Laserblast'' provides examples of:

* TheSeventies: This was a time when being fit meant you had to be rail thin. Plenty of 70's music, fashion and cars to go around, too.
* TheAllegedCar: Billy's van. Particularly clear in the scene when he challenges the two nerds/bullies to a race, only to have his van refuse to start.
* AmuletOfDependency: The alien amulet, which powers the cannon and slowly turns its wearer into a monster.
* ArmCannon: The eponymous laser blaster has a plastic tube that slips over the wearer's arm.
* AssholeVictim: Most of Billy's victims richly deserve getting blown up (emphasis on most - the doctor is an exception).
* AttemptedRape: The two nerd-bullies do this to Kathy. Billy busts in just in time and beats them up (sort of).
* {{BFG}}: The laser cannon, which is worn around ''the entire arm''.
* {{Bizarrchitecture}}: One scene has a door with its knob placed higher than normal, while another has a window with its drapes placed lower than normal.
* ButtMonkey: Billy. When even hyperactive nerds pick on you, you're low on the totem pole of teenage status.
* CoolLoser: Billy isn't super cool; he's a bit whiny and he drives a [[TheAllegedCar crummy van]]. But he's a fairly good looking guy and certainly seems closer to an average guy compared to the spastic nerds who bully him, so it's a bit of a mystery why even Froggy picks on him.
* DirtyCop: The two cops smoke the weed they confiscate from busts themselves.
* DownerEnding: [[spoiler:Billy is completely corrupted by the cannon's influence and goes on a rampage. The aliens show up, kill him and forget to take back the cannon. ''[[HereWeGoAgain Again]]''. The End.]]
* DudeLooksLikeALady: The laboratory technician, due to his odd haircut.
--> '''Crow:''' Goodbye, Mrs. Joe Don Baker...
* EvenNerdsHaveStandards: Even the nerds think Billy is a loser.
* EvilWeapon: The laser cannon, which corrupts its wielders and drives them to go on AxeCrazy murder sprees.
* HollywoodNerd: A quite bizarre case, as the ''bullies'' are portrayed this way, one of them even being played by consummate Hollywood Nerd actor Creator/EddieDeezen. As Crow says, "It's some parallel world where the spazzes bully the cool guys."
* HowDoIShotWeb: After he finds the gun, Billy spends several minutes dancing around with it, trying to figure out how it works.
* HumanAlien: The bad guy alien vaporized in the prologue (if he is an alien; Billy starts transforming into a similar form as the movie goes on). The other aliens may owe their appearance to Dale Russel's Dinosauroid (see the Human Alien trope page for more on him).
* HumiliationConga: Billy, which is basically the reason he's so susceptible to a RoaringRampageOfRevenge.
* InformedAttribute: Billy's girlfriend claims to see some sort of darkness in him, so intense that it sometimes scares her. Aside from the whole "blowing people up" thing - which seems to be the fault of the blaster driving him insane and not his own thing - he really doesn't act or speak particularly darkly. In fact, he's pretty much just a normal guy.
* TheMenInBlack: Gianni Russo's character vaguely following the trail of the alien gun, although he wears a green [[TheSeventies seventies]] casual suit instead of basic black.
* PoliceAreUseless: The Sheriff's Department here makes [[Series/TheDukesOfHazzard Roscoe and Enos]] look like [[Series/WalkerTexasRanger Walker and Trivette]].
** If the boss alien's rant is any indication, the two hunter aliens aren't much better.
* PoolScene: One of Billy's friends throws a pool party for her birthday.
* ProductPlacement: The protagonist is seen drinking Coca-Cola in a few shots. Mike and the Bots theorize it was done by Pepsi to discredit Coke.
** A can of Pepsi can be seen at the pool party. An act of revenge by Coke?
* RecklessGunUsage: Billy waves the blaster around all over the place, including point both ends at himself at various points, while trying to figure out how to make it work.
%%* RepeatCut
* ScarilyCompetentTracker: Billy is always able to find and kill his perceived enemies, even if there's no logical way for him to know where they'll be at the time he decides to attack them.
* ShellShockedVeteran: Kathy's grandpa. He barely seems to be aware of the people around him, and goes on bizarre rants about "Operation Sanddust."
* TheStoner: Everyone, including the police.
* StuffBlowingUp: To the point of becoming an OverlyLongGag.
* TakeThat: Billy destroys a ''[[Film/ANewHope Star Wars]]'' "billboard" with his cannon. Thanks to this movie's budget, it's not even an actual billboard -- just a sign upon which someone stenciled the ''Star Wars'' logo. Yeah, this movie ''totally'' gave ''Star Wars'' a run for its money. This may be one of the reasons why, for a brief time, people took ''Laserblast'' seriously, compared it to ''Star Wars'' and discussed which film was better and why. Oddly enough, the actor who played Billy Duncan co-starred with Creator/MarkHamill in the film ''Corvette Summer,'' which was released the same year as ''Laserblast''. Hamill considers ''Summer'' to be [[SoBadItsGood exactly]] [[OldShame as good]] as ''Laserblast''.
* TheUnintelligible: The aliens.
* ThoseTwoGuys: When the aliens aren't shooting people they pretty much act that way.
* VillainProtagonist: Billy. Maybe.
* WalkingShirtlessScene: Billy is almost always topless or has his shirt open, at least until he starts developing an odd sore thanks to the laser weapon.
* WhatHappenedToTheMouse: Colonel Farley. In his last scene, he's contacted by Craig and told that the government needs his services for a "special mission." He disappears after that without explanation.
* WhosLaughingNow: Most of the victims in the movie are people who wronged Billy in some way.
* WithGreatPowerComesGreatInsanity: The laser blaster drives its wielder into AxeCrazy murder sprees, and also turns them green for some reason. The more often the person uses the blaster the more corrupted they become.