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

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,

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.

Universal and Amblin’s Steven Spielberg directed Disclosure Day is coming in ahead of expectations ($35M at the domestic B.O.) with a $42.5M 3-day at 3,824 after a Friday that’s shaping up to be $18.5M including last night’s previews.