Credit: Frederick M. Brown/ Getty Images Photo: Shonda Rhimes at the Academy of Television Arts & Sciences' Welcome to ShondaLand: An Evening With Shonda Rhimes & Friends in Hollywood on April 2, 2012

While Grey's Anatomy continues to enthrall us in its tenth season, all TV shows have a shelf life, and the trick for executive producers is knowing when to call it quits — in order to go out on top, or at least, close to the summit!

In a chat with NPR's "Morning Edition," Grey's creator Shonda Rhimes mused on the prospect of ending the enduring medical soap.

The 43-year-old writer and producer was on the radio program mainly to talk about her other hit show, Scandal, which she considers to be more "finite" since it's a "different kind of show."

Grey's, however, continues to inspire her to write more and more — so much so that we've already past what she imagined to be the conclusion.

"I knew the end of Grey's Anatomy, and then we kept going, so that I finally just had to write that and move past it," she explains. "Who knows, at this point, how long that show's going to go? It's going to go as long as I feel interested in what happens to those characters."

So what was the endpoint that Shonda wrote straight through? We're assuming it had to have been a season finale, and our best guess is that it was the Season 6 climax — in which Meredith (Ellen Pompeo) stared down the gunman and laid down her life to save Derek (Patrick Dempsey), Lexie (Chyler Leigh), and Richard (James Pickens Jr.).

But what do you think the end point was? Speculate away in the comment section below.

Source: NPR

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!