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Why ER Killed Off Dr. Mark Greene In Season 8
In a fittingly tragic death, Dr. Mark Greene died from a brain tumor in ER season 8, episode 21 ... on a few one-offs and ...
'ER's 20 Most Shocking Episodes, Ranked
We rank the most shocking episodes from NBC's legacy medical drama ER, from "Freefall" to "Be Still My Heart." ...