By SHARON HOFFMANN - McClatchy Newspapers Just so you know, it's really "Indiana Jones and the Kingdom of the Plastic Skull." With a light bulb inside. And the skull is hooked up to a dimmer switch so it emits the requisite intensity of other-worldliness. And don't call it an alien, because director Steven Spielberg really didn't want to do another alien movie after "E.T." and "Close Encounters." Producer/writer George Lucas got him to sign on by calling the creatures "inter-dimensional beings." Right. Such trivia tidbits are overflowing on the two-disc "Indiana Jones and the Kingdom of the Crystal Skull" DVD due out Tuesday. The extra features are exhaustive and a bit exhausting, spewing forth hours of interviews with the creators, the stars - major and minor - and the people behind the sets, the cameras, the special...
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