Izzie walks out of her bedroom and turns to see Alex draped over a near-naked woman in his bedroom, because when you live in a house with two others you totally start having sex with the door open. I mean come on, even if he's trying to prove a point, I have a hard time believing the girl was all, "Oh, let me just pull my top off here with a nice breeze coming in from the hallway!"
Izzie, however, has drifted into a daydream where she gets in the elevator in her prom dress. When the doors open, there is hot, sweet, wonderful Denny, grinning at her. She smiles and tells him, "See? I told you I would show you my dress." He tells her she's better than a bride, she walks out, and they take hands and walk together down the hallway and into the light.
Back in the real world, Alex gives her a pointed look over the brunette's shoulder and slams the door. Mere tells us, "Reality is much stormier." We see Lexie and George studying and goofing off together. "Much murkier." At the trailer, Mere is helping Derek pack up his things. "Much scarier."
A shot of the Space Needle from the air tells us it's the next day, and Richard walks through a door to find his entire staff milling around, waiting. He slams the door to get their attention and starts a speech. He talks about the good old days when they were the best in the west, and how they've been resting on their laurels. He then, awesomely, tells them that they have all been failing: to take initiative, to ask questions, to practice skills, to give opportunity to practice skills. He admits he let it all happen, so they're all failing, but it's stopping now. He's changing things up, and everyone should consider themselves put on notice. It's not the most amazing speech I've ever heard, but everyone in attendance looks properly serious, so we the viewer know it was really good. Mere concludes: "Reality. It's so much more interesting than living happily ever after." Here's hoping that this then is an interesting season to come.