"Hasta la vista, baby" became a famous catchphrase when it was used in the 1991 film Terminator 2: Judgment Day, which was written by James Cameron and William Wisher Jr. The phrase is featured in an exchange between the film's characters John Connor (Edward Furlong) and The Terminator (Arnold Schwarzenegger), where the former teaches the latter the use of slang.

The Terminator says the phrase again prior to shattering the liquid nitrogen–frozen T-1000 with a gunshot, famously interpreting the vocative comma with a protracted pause before the word "baby".

The term "Hasta la vista" is a Spanish farewell that can be literally translated as "Until the (next) sighting" and means "See you later" and "Goodbye".

More Info: en.m.wikipedia.org