6. Dr. Mark Greene (Anthony Edwards, 1994-2002): E.R.’s most famous death was one of its least violent, as Greene slips away in his sleep from a brain tumor.
2. Steve Buscemi (Photo: Everett Collection)
The Special Guests of “E.R.”
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 Armand Assante (Photo: Everett Collection) |
The Special Guests of “E.R.”
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 Steve Buscemi (Photo: Everett Collection) |
The Special Guests of “E.R.”
3 of 13
 Mariska Hargitay |
The Special Guests of “E.R.”
4 of 13
 Ewan McGregor (Photo: Everett Collection) |
The Special Guests of “E.R.”
5 of 13
 Cynthia Nixon (Photo: Everett Collection) |
The Special Guests of “E.R.”
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 John Leguizamo (Photo: Everett Collection) |
The Special Guests of “E.R.”
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 James Woods (Photo: Everett Collection) |
The Special Guests of “E.R.”
8 of 13
 Thandie Newton (Photo: Everett Collection) |
The Special Guests of “E.R.”
9 of 13
 Ray Liotta |
The Special Guests of “E.R.”
10 of 13
 Rosemary Clooney (Photo: Everett Collection) |
The Special Guests of “E.R.”
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 Sally Field (Photo: Everett Collection) |
The Special Guests of “E.R.”
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 Alan Alda (Photo: Everett Collection) |
The Special Guests of “E.R.”
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 Forest Whitaker (Photo: Everett Collection) |
