Plenty of alien invasion movies have become box office hits and certified classics, but here are some forgotten alien invasion movies that still hold up today.

Steven Spielberg’s fourth film about alien encounters is “Disclosure Day,” following “ET: The Extra-Terrestrial,” “War of the Worlds,” and “Close Encounters of the Third Kind.” That inspired us to take another look at what Roger Ebert thought about some of the most famous and infamous alien movies,

With Steven Spielberg’s “Disclosure Day” due in theaters this week, we give props to the best space invasion movies of all time.

Add Yahoo as a preferred source to see more of our stories on Google. Some of the greatest sci-fi movies of all time revolve around humans in a desperate struggle for survival. Sometimes we’re fighting time-traveling robots or out-of-control plagues.