Will <I>Grey's Anatomy</i>'s Mer becomes Mrs. McDreamy? Will Grey's Anatomy's Mer becomes Mrs. McDreamy?

The only question is whose, exactly.

At a party marking the filming of Grey's Anatomy's 100th episode, series creator Shonda Rhimes confirmed that the milestone hour will air May 7 — and indicated that it might feature the nuptials of the show's central couple.

"The only thing I'll tell you about the 100th [episode] is that it takes place on Meredith and Derek's wedding day," Rhimes told the Associated Press at the show's celebration.

"That's big," Rhimes underscored, "and that's all I'm going to say."

Of course, were one to be hyper-analytical and parse words, it's not for certain that the Mer-Der wedding goes without a hitch. For one, it would represent a mighty short engagement (he will have only non-proposed six weeks prior). Secondly, this is Meredith and Derek we are talking about.

Thirdly and perhaps most importantly, Rhimes has previously said that the wedding taking place toward season's end would be a "surprise." Now, is that "surprise" as in the aforementioned short engagement or "surprise" as in the couple that emerges at the end of the aisle is not the same one that started down it?

What do you think? Will Mer-Der actually tie the knot in the May 7 episode? Vote in our poll right below, and elaborate on your take in Comments.