Random people have posted many, many episodes of What's My Line? on YouTube. I've seen several of them. Suprisingly, most of them are pretty dull. One person's, however, stands out:
I will be the first to say Elizabeth Taylor is not one of my favorite actresses. But she is such a movie star. She looks gorgeous, she's dressed divinely, she's hilarious, and she does some of her best acting. If that video won't make you a fan, I don't know what could.