TV's biggest casting changes

POSTED: 01:17 PM PDT Jun 09, 2011    UPDATED: 11:00 PM PST Jan 02, 2013 

Take a look back at some of the more memorable casting changes in the history of television.

MASH, Colonel Potter
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20th Century Fox Image

Replacing him eventually as new commanding officer for the 4077th was Col. Sherman T. Potter, played by Harry Morgan from season four through the end of the series.

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