Sara Ramirez's performance in last night's musical episode of 'Grey's Anatomy' set the Twitterverse afire. But, while she garnered positive reviews all-round, the much-anticipated episode itself had a more mixed reception.

According to The Hollywood Reporter, Ramirez rocketed into the Top 10 trending topics on Twitter as fans immediately Tweeted their reactions to her performance. A typical one reads: "This is gonna be HUGE for Sara Ramirez. She's a freakin superstar!"

However, Twitter lovers were less unanimous in their assessment of the episode as a whole, with opinions ranging from "Major #fail," to "disappointing," via "BEST EPISODE EVER!!!!!!."

Some, coming late to the party, wondered if the whole thing was an early April Fool's prank.

['Grey's Anatomy' - 'These Arms of Mine"]

Last night, 'Grey's Anatomy' became 'Seattle Medical: Road to Recovery' -- less of a documentary and more of a reality show with its drunken camerawork, odd subtitling, closed captioning, and awkward close-ups of people breaking down.

The chief was convinced a PR boost would be a good thing, so he allowed a documentary crew to follow everyone around the hospital. He turned out to be a true political candidate who could rival any of the political ads that air airing during the commercials. His justification of the hospital's security system and shameless appreciation of Arizona and Alex was a bit much.

(S05E24) "If you're not scared, you're not paying attention." - Bailey

I took a few hours off in between last night's two hour Grey's Anatomy finale. I knew it was going to be two posts since it was two episodes and so I sat and watched the first one, wrote it up, grabbed a few hours of sleep, and woke up trying to figure just what was going to happen in this episode before I watched it. Everything was so nicely set up (the first hour really could have served as a finale too) and once again, Grey's Anatomy caught us all off guard with what's arguably its biggest cliffhanger yet.

(S05E23) "I'm your tumor. You're talking to yourself." - Denny

Just when I was finally starting to get sucked back into Grey's Anatomy, when I had finally come to terms with the ridiculous Denny/Izzie sex, when I had finally said, "hey, I actually like where they went with this," he had to come back one more time to ruin it all. After last week, I thought we had seen the last of Denny Duquette. Izzie told him to go and he went. But it's like Denny said - he's Izzie's tumor and as long as she still has the brain lump, Denny's gonna keep getting a tan down at Izzie's imaginary beach. I think I speak collectively for the entire population of Earth when I say thank god Izzie chose to get the surgery.

(S05E12) "You're wearing an alarmingly high pony tail." - Derek

At the most simplified level, Dunn is right, you know - a doctor isn't really that different than a serial killer. They both get to choose who dies. A doctor is likely driven by science while a serial killer gets his marching orders from a little voice in his head, but they're both making choices; doing what they think is the right move. Eric Stoltz has thus far been a shining point this season. William Dunn is one of the better characters we've seen on Grey's Anatomy in a while and I'm glad he'll be around for at least one more week.

(S05E11) "Sexed-up stalkers." - Sloan

I thought Grey's Anatomy had gone far enough with the Izzie/Denny mess - until this episode. Why you ask? Because they introduced a doctor who gets around on Heelys!! Do you have any idea how much I hate Heelys? Nine-year-olds come whipping by on those damn things when you're walking around the mall, and as much as you hate to wish bad things upon a 9-year-old, I'm just waiting for the headline "Local Sixth Grader Wearing Heelys Cracks Skull Open in Front of Orange Julius." Oh and that doctor (Dr. Arizona Robbins) that got introduced tonight? She's a pediatric surgeon. Great message to send to the youth of America.

(S05E09) "Who's making a porno movie in Izzie's room?" - Derek

I am an unashamed Grey's Anatomy fan. I've watched it since the very beginning. At this point, it'd be hard for me stop because I feel like I've invested too much time to just say the hell with it smack in the middle of the show's fifth season. A season which I went from loving, to hating, to loving, and now to absolutely despising. So for those of you who seem to think that I shouldn't be writing weekly reviews of this show because "I don't seem to like it very much, well, I assure you that's just not the case. I complain because I love. Based on that, I really loved this episode.

(S05E08) "It's too bad - she was really talented." - Shepherd

Snap! Well that didn't take long. Thirty seconds into the episode and Shonda Rhimes made it very clear how she feels about Brooke Smith's departure from the show. Even though I didn't like the whole Callie/Hahn romance and even though I thought Hahn's exit actually made a bit of sense (it was written well), I still don't see why it was necessary to fire Smith. There had to have been a better way to fix the story without removing her. Regardless, no sense in whining. She's gone and Seattle Grace Hospital now has two new faces for everyone to gossip about.

(S05E07) "It's like a bouquet... of corpses!" - Izzie

You know, for a guy that died, Denny Duquette somehow manages to get more screen-time on Grey's Anatomy than most of the characters who are still living. Seriously, it must be incredibly frustrating to be a minor character on this show and know that two or three times a season, some dead guy who most fans are sick of will get more time in front of the camera than you will.

(S05E06) "I am so gay." - Hahn

As much as I've been annoyed with how the Hahn/Callie courtship has gone thus far, I have to say - I think they won me over here. To see Hahn cry and blubber about how she's finally discovered herself, I couldn't help but feel bad for her. Granted she flipped the bitch-switch back on at the hospital, but you can't really blame her for that. She's gay. Callie's bi. And Major Owen Hunt likes to stab live pigs.

(S05E05) "Interns - the other white meat." - Alex

I'll gladly pay you Tuesday for a kidney today! The rare opportunity of being able to perform a domino procedure has finally come to Seattle Grace (thanks to Bailey's efforts), and with the bad shape that SGH has been in lately, it couldn't have come at a better time. They need some good headlines.

But as with all in-depth Grey's Anatomy plots, there is no way you're going to get 12 kidney donors/recipients together without there being some drama. Hey, people with severe renal failure still have daddy issues and engage in extramarital sex too you know.

(S05E04) "Karev! Give me a twenty!" - Derek

OK, before I dive into this episode, let's get the one thing that everyone will be talking about out of the way first: Callie and Hahn. Yes, yes - I know - Grey's Anatomy has a budding lesbian relationship. Based on everything I've read over the past few weeks, people are for or against it for a myriad of reasons and after tonight's "date," I'm ready to pick a side.

(S05E03) "Yeah yeah - the hair. It's one of the many things that makes me happy." - Meredith

This wasn't the best episode of Grey's Anatomy, but I think it got back to a lot of the core reasons that made this show good in the first place. The focus has finally returned to Meredith and Derek, which was sorely lacking last season. This show just doesn't make sense to me when the tension between those two is ignored or pushed aside for one of the bajillion other relationships going on.

Beyond that, there was plenty of humor - another thing that had been lacking. So I'm feeling good about where this season is going to take us and as I said - it starts with Mer and Der.

(S05E01/S05E02) "The person that invented the phrase 'happily ever after' should have his ass kicked so hard." - Meredith

Another September, another Grey's Anatomy season premiere. Hard to believe that we're already into a fifth season. But you know what isn't hard to believe? That we're still dealing with the same "Meredith and Derek - will they or won't they" mess. Grey's has reached the point that regardless of what happens, I'm going to keep watching it because I've invested too much of my time to walk away now. I really am a fan of the show, which is why I don't feel bad when I say that this was quite possibly the most ridiculous season premiere ever. It was all over the place like some strange metaphor for all the ups and downs Mer and Der have had over the years. A random army doctor, two limousine accidents, ninja attack icicles... and god, the cherry on top - Denny Duquette. Really?

"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.