Nurse Carol and Dr. Benton have returned! Yep, original castmembers Julianna Margulies and Eriq La Salle have returned to see off their old show ER, and Carol brought Susan Sarandon with her! As you can see in the sneak peek above, Carol is somehow back at County and helping with the care of Susan's character's comatose son. Elsewhere in the hospital, Benton and Carter are reunited by Carter's failing kidneys. Check out the three additional sneaks below to see Benton playing yenta to his old intern...