With all the attention paid to whether or not Izzie will pass away tomorrow night, another major question has been more or less overlooked: Does this week's fifth season finale mark the final episode for another beloved character, Dr. George O'Malley?

Here's what TV Guide has to say in its spoiler chat ...

Q: What can you spill about the two-hour Grey's Anatomy season finale? Are we definitely saying goodbye to George and T.R. Knight?

A: Yes, there are rumors swirling that the finale not only paves the way for George's departure from Seattle Grace, but perhaps also his exit from this plane of existence as well.

I presented said scuttlebutt to Chyler Leigh (who plays Lexie), and asked if she feels she's shared the Grey's Anatomy set with Knight a final time. "Not that I know of," she said. "I'm not even sure T.R. knows [what the future holds]. I don't think anybody knows what's going to happen."

Well, nobody except Shonda Rhimes, that is.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.