1.) The person you are meant to be with. Your soulmate
2.) Neo's true person in The Matrix.
3.) Your perfect choice when doing something, store, car dealership, police lineup, etc..
4.) A very good movie starring Jet Li and Jason Statham traveling to paralell universes.
1.) Dude, I know it, she is the one.
2.) Morpheus: He IS the one.
3.) Policeman: Is that the man who robbed you, ma'am? Woman: Yes, he's the one who did it.
4.) Am I the ONLY person on the planet that thought The One was a good movie. I bet you couldn't have done any better..... Jackass.