This is even funnier/sadder if you know the horrible, horrible psychological trauma Shelley Duvall endured while acting in this.
I wonder what trauma that is. Google revealed nothing except that they retook the baseball bat scene 127 times, which broke the world record for most retakes of a scene with dialogue. Oh, nvmd, found it: http://www.cracked.com/article_19099_12-classic-movie-moments-made-possible-by-abuse-murder.html
hint: ctrl+f -> shining -> enter -> read