is

Japan Is Great

IS is IS. "Is meaning equal" is tautology. Is is simply is.
Is IS is? Yes, is is is.

In slang, "is" is used to replace "are"

What is you doing?
What rappers have influenced upon today's society, making children of this generation think it's grammically correct to use "is" in place of "are".
part of a chorus from a rap song:
"Damn Girl
How'd you get all that
IS you talkin to me?
Yeah you"
some random guy trying to act tough: "who the hell IS you?"

A word that, despite being among the most common in the language, not everyone is sure of the meaning of.
A word whose very meaning was questioned by former president Bill Clinton while he was on trial.
It depends on what your definition of the word is is.

3rd person singular of "to BE"

He is confused on how to define "is".

Andy Dufresne : The funny thing is, on the outside, I was an honest man, straight as an arrow.

A perfectly acceptable beginning to a Facebook status update, no matter how grammatically incorrect. Most notably when a person has bad taste in music and uses song lyrics for status updates.
"Matt Anderson is How the hell we'd wind up like this? Why weren't we able? To see the signs that we missed And try an' turn the tables?"