Did a google search, and I can't find the sample online.. but do you have the movie on dvd? I assume you do. Does your computer play dvd's?
Well, here's a quick and easy solution (though the best solution would be if you could just line in the cables from your tv to the mic port on your computer)..
Play the dvd.. go to that scene...
Go to your volume control and go to options.
Click on recording.
Now, select "stereo mix". What this does is allow you to record whatever is playing through your computer speakers. Now, open up any sound recording program, hit record and record the speech as it's playing on your computer. Simple.
Really, though, recording the sound with a mic to your tv would probably sound good if you clean it up afterwards... if you have cool edit pro/adobe audition, specifically use the "remove hiss" and "removes noise and pops" setting..
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