ER Returning

I just read a post that said that NBC is thinking about bringing ER back for a 15th season. The post also said that they wanted to bring back some of the old favorites. Does anyone really think that George Clooney has the time to return to ER? Isn't he out saving Darfur or something? Now we all know Noah Wylie can come back but Clooney, I don't think so. Too bad Mark Greene (Anthony Edwards) had to die on the show. he would have had the time to return as well. The show is still one of my favorites but I think that it might be time to end it. Stay tuned!