Julianna Margulies says she won't be back at 'ER'

Hmmm..and we still wonder if Clooney will show up...

NEW YORK (AP) - The final "ER" season is bringing back some of its original stars for guest shots, but Julianna Margulies won't be among them. She was invited but says she declined.

Margulies, who played nurse Carol Hathaway on the NBC medical drama from its 1994 premiere, exited after six seasons. Her character left Chicago for Seattle, settling down with the character played by fellow "ER" alum George Clooney.

Margulies says she feels she left Hathaway "in the best scenario possible" and can't imagine a better ending for the character.