Japanese throwing stars.
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Assume they meant Shuriken for the "stars".
But if you really mean "circular" as in full on rings, then they're known as Chakram.
Smaller rings are Quoit.
Or for the truly low brow, "Chinese stars". Coming to a flea market table near you!
Only a movie assassin would not loath these for use in taking anothers life.
Blades Of Glory
Here At the Movies - 2007 Blades of Glory 1-4 was released on: USA: April 2007
from the actual movies
He is referred to as a dually in the companion books to the movies, but in the actual movies he has only four wheels.
Ruben Blades is singer, composer and writer that specializes in salsa and Latin music. he has also appeared in movies such as The Super, Once Upon A Time In Mexico and Predator 2.
Black holes in science fiction movies are giant, black holes that rotate like a circular saws inwards.
Le film (actual movie) or le cinéma (the movies; going to the movies)
There is no actual footage. All of the Paranormal Activity movies are completely fictional.
In movies, one can create a ring of fire in several ways. Typically, it can be created using a flammable liquid arranged in a circular fashion which is then lit with fire.
Sprite AI is used with the games, but I don't know that it was used in the actual movies.
The biggest sites for sky movies is windows and the actual sky site. They give a run down of how to properly save movies and to organize them so they are always convenient.
A whirlpool usually occurs when the ocean tides swirl in a circular pattern. This phenomenon can happen virtually anywhere, however. (i.e.- when you drain a bathtub, the motion of the water as it rushes in a circular pattern down the drain is still considered a whirlpool) Most of them are not as large or powerful as the ones seen in movies, though the strongest one recorded is the "Saltstraumen" in Norway. Its speeds reach up to 37 km/hr. Depending on size and strength, whirlpools can be lethal to unfortunate seafarers, but these occurrences are largely exaggerated by movies, literature, and the like. See the following link for a picture of an actual whirlpool: