Season 6 -- Pictured: Laura Innes as Doctor Kerry Weaver, Julianna Margulies as Nurse Carol Hathaway, Goran Visnjic as Doctor Luka Kovac, Paul...
Actors Noah Wyle, left, and George Clooney, second left, film an 'ER' skit for 'The Tonight Show with Jay Leno', November 24th 1994.
George Clooney as 'Doctor Doug Ross' and Anthony Edwards as 'Doctor Mark Greene' in 'ER', October 20th 1994.
Actors from left, Sherry Stringfield as 'Doctor Susan Lewis' and Noah Wyle as 'Doctor John Carter' during a scene from 'ER', October 19th 1994.
Actress Sherry Stringfield as 'Doctor Susan Lewis', left, during a scene from 'ER', October 19th 1994.
Actors from left, Kristopher Logan as 'Lobster Man', Deezer D as 'Nurse Malik McGrath' and Anthony Edwards as 'Doctor Mark Greene' during a scene...
Actors Christine Harnos as 'Jennifer Greene' and Anthony Edwards as 'Doctor Mark Greene' during a scene from 'ER', September 22nd 1994.
Actors Noah Wyle as 'Doctor John Carter' and Liz Vassey as 'Liz' during a scene from 'ER', August 4th 1994.
Actor Anthony Edwards as 'Doctor Mark Greene', right, speaks to Kristopher Logan as 'Lobster Man' during a scene from 'ER', August 4th 1994.
Noah Wyle as 'Doctor John Carter' and Rosemary Clooney as 'Mary Cavanaugh'/'Madame X' in 'ER', circa August 1994.
Glenn Plummer as 'Timmy Rawlins' and Julianna Margulies as 'Nurse Carol Hathaway' during a scene from 'ER', August 1st 1994.
Actor Anthony Edwards as 'Doctor Mark Greene' and Julianna Margulies as 'Nurse Carol Hathaway' during a scene from 'ER', August 4th 1994.
Anthony Edwards as 'Doctor Mark Greene', left, and George Clooney as 'Doctor Doug Ross' during a scene from 'ER', August 4th 1994.
Anthony Edwards as 'Doctor Mark Greene', left, and William H Macy as 'Doctor David Morgenstern' during a scene from 'ER', August 4th 1994.
Anthony Edwards as Doctor Mark Greene; George Clooney as Doctor Doug Ross; Sherry Stringfield as Doctor Susan Lewis; Noah Wyle as Doctor John Carter;...