Ooh, remember when Derek Shepherd was just another hot doctor at Seattle Grace, making eyes at a certain intern and going about his neurological business?

Now he's the big, bad chief who has to make the hard decisions, whether it's ordering a patient to abide by his wishes or telling the former chief that he'll do that surgery, gosh darnit, and Bailey will assist.

It's ok, though. We know that underneath that snarly business persona beats the heart of a hot doc with great hair on 'Grey's Anatomy' (Thu., 9PM ET on ABC).

Watch the video after the jump.

(S06E14) It's Valentine's Day on 'Grey's Anatomy' and to celebrate, we have a restaurant roof collapse. The show claims to have the biggest surgery ever, which turns out to be an arm reattachment, with the arm temporarily being attached to a leg. While it's interesting and I'm sure a rare surgery, it still doesn't compare to separating conjoined twins or being impaled to a car in my book.

While everyone struggles with the multiple surgeries, miraculously, both Arizona and Callie have time to dilly-dally. Arizona tries her hand in playing Cupid on Valentine's, pairing up Bailey with Dr. Warren. Callie gets to check up on Sloan with her free time. What happened to the Callie who used to snap arms back into place?

(S06E13) There was no reason for 'Grey's Anatomy' to have had a rerun last week. Why didn't the producers start one week later? Either way, Derek takes over Seattle Grace this week as the chief and struggled on his first day. While he managed to figure everything out by the end of the day, it's nice to see Derek's evolution handling the responsibilities.

The Chief, or I guess he's just now demoted to "Richard," struggled with his decision to retire or go to rehab for the whole episode. While Derek, Meredith, and Bailey tried to talk to him, it was all his decision to make the next step. Here's hoping that he comes back stronger than ever.

(S06E12) This episode of Grey's Anatomy reestablished Meredith as the core character of the show: she was the one who had to deal with Derek's problems with the chief, the aftermath of Alex and Lexie, Christina's driven nature, and had to console the chief. Fortunately for her, it was one of those weeks where she actually had the time to brush her hair.

I've gotten some criticism when I declined to watch the Private Practice crossover. After seeing this episode, I don't think that I needed to watch the crossover episode at all. Mark was devastated about Lexie, had sex with Addison because he was so depressed, and was upset that Lexie acted so immature. He quickly explains that in one minute. There goes that relationship.

(S06E07) This week's episode of Grey's Anatomy focused on Derek and evolved the character as someone that's not just McDreamy. The show should start with Patrick Dempsey talking more often. I didn't realize how mellow his voice was, though saying the words "calm," "quiet," and "peace" automatically sound calming. I hope he narrates a Disney movie soon.

If the show continues to be strong with character driven development per episode, I suggest keeping Meredith bed ridden. She's already forgiven her father and has strengthened her relationship with her sister. Let's evolve the rest of the one-dimensional characters while she stays in bed.

Is it just me or there seems to be a baby boom in Hollywood this TV season? This is probably the 73rd post we've written here at TV Squad this year about a TV actress being pregnant, wondering how it will affect the show she stars in.

When the two lead actresses of How I Met Your Mother announced they were pregnant, the writers decided not to write the pregnancies in and go for the "hiding the belly under big clothes or things" option instead. They even shot the season finale months before they would have usually done so they could have the two actresses in reasonable shape.

People announced that Grey's Anatomy lead actress Ellen Pompeo is pregnant with her first child, while reminding us that Chyler Leigh, who plays Pompeo's half-sister, is due in May. We know that Shonda Rhimes decided not to have Lexie be pregnant but what about Meredith?

Warning! The rest of this post contains spoilers about upcoming episodes.

(S05E10) Before I even start this review, I've got to vent about the absurd amount of commercials during this episode of Grey's Anatomy. Is it always this bad and I just haven't noticed? Are there always ads every two minutes or so? I found it extremely distracting to be constantly interrupted, especially when there were so many storylines going on tonight.

And we did have a lot to keep track of: Dr. Dixon's appearance, the Izzie / Denny / Alex love triangle, who would be awarded the first solo surgery, Callie's and Sadie's flirting, the medical cases of the week, Yang and Hunt, Sloan and Little Grey, Bailey and Sloan ... I can barely keep track of them all.

Let's break down this episode after the break and try to make some sense of "All By Myself."

"The pager is sacred. Sacred sparkle." -- Izzie

A sparkly pager, some quick-drying cement, and a field of candles all play into tonight's 2-hour episode -- the Season Four finale of Grey's Anatomy. Has it really been only four seasons? Because it seems like so much more.

Anyway, tonight we learn a little more about some of the interns' history. For one thing, via a therapy session (and why can't I have Amy Madigan as my therapist?), we learn that young Meredith saw her mom slit her wrists, then had to wait for her to pass out before calling 911.

Meredith says her mom wanted to die, but by the end of the episode, she figures out that she really didn't want to die. Being a brilliant surgeon, her mom would have known the faster road to death entailed slitting her carotid artery.

Meredith's sister! Alex's anger! Izzy and Denny! George and The Busty Nurse with Porn Star Makeup! Christina's naked! Chris O'Donnell!?! Believe me, we would have loved to have podcasted the last episode of Grey's Anatomy for you, but Kat is on vacation. We'll be back next week with an all new podcast, wrapping up the events of the last two episodes. In the meantime, here's a game: let's throw out predictions for how long it'll take Derek to punch the hunky vet in the face. if you get it right, you'll get a shoutout on the ensuing podcast episode, as well as our undying love and respect.