Hardly a more memorable movie weapon than this classic Jedi sword from the Star Wars movies. The perfect melding of feudal past and technological future.

The essence of cool. :-)

It's a Callahan full-bore auto-lock. Customized trigger. Double cartridge thorough gauge. It is my very favorite gun.

The BFG9000, or "Bio Force Gun" (which is humorously referred to as "Big Fucking Gun" by Sarge), is the most destructive hand-held weapon used in the movie. The projectile consists of a superheated ball of plasma, melting anything in the blast radius. The plasma can burn through several metres of solid rock and will continue to slowly burn away at the target for several seconds.

Weapon of choice of chief Yakuza hunting down Keanu Reeves in Johnny Mnemonic

Really really REALLY big Star Wars weapon! (Also moonlights as the AT&T corporate symbol. ;-)

Yes, I know it's damn near the same weapon as the one in T2.

It's Tron man! Even the Deadly Disk game was cool!

The Armat M41A is a fictional weapon, a 10 mm pulse-action air-cooled automatic assault rifle, which is the basic rifle of the U.S. Colonial Marine Corps and the U.S. Army in the Alien series of films. The standard service variant has an over-and-under configuration incorporating a PN 30 mm pump-action grenade launcher.

Since the release of Aliens in 1986, the M41A has become one of the best-known and most popular science-fiction weapons in cinema history. The M41A also makes a brief appearance at the end of Alien, carried by the company soldiers, but the prop weapons originally used in Aliens were re-painted black for that film.

AAAAGHH!

http://www.youtube.com/watch?v=kceF9VEyIvo 

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The Orgazmorator is the weapon from the 1997 movie Orgazmo. Talk about non-lethal weapons!