Shazam, the Apple store application has not been cancelled. The
television program called Shazam was cancelled in 1977 because of
lack of viewer interest.
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"Western Costume" out of North Hollywood made the Filmation
Captain Marvel suit seen on "Shazam!" in 1974.
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Shazam is a smart phone app that allows you to shop on your
phone and gives you access to exclusive content provided by the
retailer. For example, Old Navy includes this message in its
commercials.
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Websites say he was injured while filming an episode and had to
be replaced before he could finish healing- so John Davey was hired
to fill in for him and played the role for the remainder of the
series.