<<Disclaimer: Verify this information before applying it to your situation.>>
I was trying to get the Today Show segment but the links at CSA and Univ. of MD just took me to the NBC home page - no video. The problem was that I had downloaded a Google toolbar, which blocks pop-up ads. The video comes up like a pop-up so it was also being blocked. As for Google, if you hold the Ctrl key while clicking the link, the video (and the ads) will come up. For those of you who were having trouble too, the video is still there!
If anyone still can't get the video, a somewhat grainier copy is available at:
http://www.dfwceliac.org/html/nbc_news_article.html
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