Wondering how NBC will coincidentally bring their seasoned ER vets back into the fold? Trying to figure out what role Susan Sarandon will play in the departing series?

Although it appears NBC will be keeping George Clooney‘s cameo close to the vest, the network has allowed us sneak peeks of two other cast faves: Julianna Margulies and Eriq La Salle.

Make sure to set your DVRs. Julianna, Eriq, Susan and George are all scheduled for the March 12 episode of ER.