Hey you should check out http://tv.blinkx.com/. I found most of my old time favorite shows like Lost, prison break here. http://tv.blinkx.com/show/bewitched/iOyky--goqIctYlGR4QRDQ http://tv.blinkx.com/show/the-alfred-hitchcock-hour/ptBP0JvhCStCW7Sfp1hGkjGI4Lqzb6I1VXch4_K_BrQ
There is a site called hulu. They say you can watch just about anything on there.
Maya is right about Hulu. I know for a fact it has 'Bewitched.' (Oh, and it's a free site. You just have to put up with a few Internet ads here and there.)
There are a lot of sites that offers old tv shows, I suggest you start your search at Ant , it is easier that way.
http://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4GGHP_enUS367US367&q=TV+shows+Bewitched
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