Noah Wyle's Dr. Carter has got this whole failed kidney thing going on for the last couple episodes. If you remember way back when he got stabbed he lost one, but now his other one is trouble because his work in Africa led to him contracting some weird kidney-attacking disease (I'm not good with that fancy medical jargon).

Eriq LaSalle is back as Dr. Benton and he's a surgeon at a hospital (but not working at County, because no sane doctor would still be working there after all these years). And Julianna Margulies is back solely to get the chance to work with Susan Sarandon. I'm sure there's some other reason, but that seems to be the point. And she gets to wear a stylish suit. This episode looks like it is pretty heavy on the Old Timers, rather than the newbies, so if you wanted to check back in to ER this is the time. Also, this is reportedly the one with George Clooney. See how I saved the best for last? Yeah, and you are going to kick yourself if you miss him in all his hotness.

If for some reason you'd rather watch Private Practice instead, it is on, but you are probably going to at least want to set your DVR for this on NBC at 10 PM. Because... George Clooney! In case I didn't mention that. See everything else that's on for the remainder of this week in our week in preview post.