Title of sci fi movie?

Can anyone help me remember the title of an 80's (maybe early 90's) sci-fi movie? The movie starts off with a girl walking by a payphone in the middle of the night. The phone rings, she answers it and a frantic guys tells her he has accidentally shot a nuclear bomb to the US. Obviously, he had...

I am not sure when this movie was made, but I remember watching it on TV as a kid in the 80's. It was a movie about a "fountain of youth" type product that stopped aging in most of the population. However a small percentage reverted back to caveman types. The people that survived were in secured...

I saw a movie the other day, and I do not know the name. I saw it at like 3 in the morning on encore. It was entirely animated. It was sci-fi, and there were futuristic scenes as well fantasy scenes. It was very long. It had like sub-plots in it; different stories within the story. It went back and...

Never got to see the movie all the way through. But I believe the basic plot is some teenage boy, finds some kind of alien weapon, has a standoff with the fbi or the army, is convinced he is going to be taken off of earth by aliens. I think he tries to use the weapon against the soldiers, or is...

trying to remember the title of a sci-fi movie where a man finds an alien weapon in a desert that whenever he placed it in his hands, he turns to a 'monster'. i also remembers that the aliens tries to look for this lost weapon.