George Clooney to appear in the final season of 'ER'?

Could George Clooney be returning to 'ER' for its final season?

Producers of the hit show have said they would like the actor, 46, to appear on the NBC show's 15th and final season.

"We want to revisit characters that have existed on the show over the years and say where they are now," says producer David Zabel. "We'd love to get them all back in some way, but that doesn't mean we're going to. But we're gonna try."

According to Entertainment Weekly, Zabel and producer John Wells have said they would like to see an update of Clooney's character -- Doug Ross -- and Julianna Margulies' character, and Noah Wyle is already reportedly set to reprise his role as Dr. Carter for four episodes. Goran Visnjic and Maura Tierney are also expected to make an appearance. They'd even like to bring back Anthony Edwards -- even though his character died on the show.

"That's a little tricky, but there are ways to do it that we've thought about -- even if it were like a lost episode from 1996 featuring him and Wyle," says Zabel.