I believe it was Terminator 2 - certainly that was the first with a totally realistic effect.
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Restricted to liquid "man", I would agree with T2 (1991) as the answer. However, I believe the liquid "being" effect was pioneered in 1989 in "The Abyss" when a deep-sea intelligence took on the form of a conduit (or large worm if you prefer) using sea water. The effect was remarkable for the time, especially when the life form copied the facial appearance and expressions of the character portrayed by Mary Elizabeth Mastrantonio. Not as remarkable as T2, but a great beginning.
Micron
I think to much speicial effect can substract from a movie
To effect something is to change it. It can also be something that is done in a movie or play (a special effect). An example would be: "The effects of the flies on the dogs was hilarious".
Movie special effects refer to work done through a computer after the film is made. For instance in Avatar they shot the entire movie in front of a green screen and then used special effects to add in the scenery and creatures.
the matrix
It is just a computerized special effect developed for the movie in the same way that the dinosaurs in Jurassic Park aren't real.
The Abyss (1988)
There is only one effect i know of... try merging the clips of the same shot but with something different on one of them for a fading effect...
as far as i know it was an episode of The Twilight Zone
Is the effect a stand-alone .gif file with separate audio? Is this a specialized effect download or a design of your own? More info is needed to answer your question sufficiently.
You can't get the split screen effect without first downloading the effect itself.
one was her first movie ''The shocking pilgrim''.
From what I know, most special effects were done by computer animation from the company Industrial Light and Magic. As for if the effects were made otherwise, I'm not sure