Washington, Jan 28 : Susan Sarandon has reportedly joined forces with George Clooney to star in the final episode of the NBC series `ER'.

While the `Ocean's Eleven' star is reprising his role in the episode Sarandon will be making a guest appearance, reports E! Online.

According to sources, Sarandon filmed scenes late last week with fellow Oscar winner Clooney on the set of ER at Warner Bros. Studios in Burbank.

The episode will air toward the end of the current final season of the long-running series.

Another star to work with Clooney on his return to the small screen, include ER series regular Linda Cardellini (Sam) who will appear with the actor in at least one scene.

Until now, no details of the storyline have been revealed. (ANI)