Alex and Cristina converse in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy. Looks like a great one!

Richard talks to Miranda and leaves no doubt that he's in command in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy. Looks like another good one.

Richard wonders what to make of the latest crises in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy.

The flood is coming. Or at least the plumbing nightmare. George feels a drip and looks upwards in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy.

George O'Malley retakes his intern exam in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy.

George gets to retake his intern exam in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy. But will it be completed, given the certain plumbing problem?

In this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy, Meredith looks up and wishes this meeting were over. That, or something's dripping.

Another Mer-Der conversation from "Here Comes the Flood," from the fifth season of Grey's Anatomy. What could they be up to this time?

Meredith Grey, seen in this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy, is sometimes referred to as Mer. Which some people spell Mere. Just strange.

In this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy, Alex walks and talks with Meredith and Derek.

In this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy, Meredith seems to be pulling back from a Derek kiss. Wonder what the tension is with the lovebirds this week!

In this picture from "Here Comes the Flood," from the fifth season of Grey's Anatomy, Meredith and Derek share a moment. One of many great moments it looks like.