1. Tracy Does Conan (season 1, Episode 7)
To many, This is the first truly great episode of the show, that showed what 30 Rock would grow into. in this episode, Tracy is ambivalently booked on the Conan show, to promote his new movie and TGS, despite trying to stab Conan the last time he was on the show. however, tracy is off his meds and is new ones are causing him to hallucinate (not great for Conan). This epode is great for a multitude of reasons. firstly, the character development. Liz is trying to break up with her current horrible boyfriend, but decides to stay with him because it is easier than starting over. however the best part about this episode is that it introduced my personal favorite reoccurring character on the show, Dr. Leo Spaceman played by Chris Parnell. His questionable morals and medical skills provide perhaps the funniest lines in the whole series.
2. The Rural Juror (Season 1, Episode 10)
This episode is by far one of the best episodes of the first season, and again show what the show would eventually evolve into. This Episode mainly (and I say mainly because every episode has many, many, sub plot lines) revolves around Jenna Maroney, the original star of the Girlie show, played by Jane Kraowski, and her appearance in the film adaptation of a "Kevin Grisham" novel (yes, John's brother) entitled the Rural Juror. One running gag of the episode is that no one actually knows the title of the film, although there were some good guesses, including "the Oral Germ Whore". This Episode also deals with Tracy and Jack trying to market The "Tracy Morgan Meat Machine" a Gorge Foreman Grill type invention. however the Meat Machine is made poorly and shoots out hot oil. as a result, it can only be sold in the Ukraine, and is eventually endorsed by Whoopi Goldberg. Despite this episode being absolutely hilarious, it is also the first time in the show that there is any character development, and it really worked.
3. Gavin Volure (season 3, Episode 4)
Its no wonder this episode is on my list, you cant really go wrong with a guest star like Steve Martin. In This brilliant Episode, he plays an billionaire agoraphobe named Gavin Volure, who wile at a dinner party, finds Liz so attractive that he asks her to spend the weekend with him in his mansion, too good to be true right? Right. In a true 30 Rock plot twist, it turns out that Gavin is actually not who he seems. he is under house arrest for fraud, arson, embezzlement, and racketeering, and only invited Liz for the weekend to attempt escape. This episode exemplifies the great acting talent of all cast members on the show, and has some great satire, with Gavin representing a number of Wall street crooks. there is also a side plot involving a strangely life like Japanese sex doll of Tracy.
4. Dealbreakesrs Talkshow (season 4, Episode 7)
this episode starts after Liz's relationship book "Dealbreakers" becomes a best seller (even in China, although there her names is translated as "Lesbian Sour Fruit). After the success of her book, Jack decides it would be a good idea to have Liz come to the front of the cameras to star in her own Dealbrakers talk show, it isn't. it starts off with Liz getting a, not so great, makeover, and her slow decent into insanity, acting just like the crazed actors she is usually forced to take care of. wile this is going on, Frank, an other writer for TGS played by Judah Friedlander, is put in charge wile Liz is filming the show. As a result, he slowly turns into Liz and you understand why Liz is the way she is a little more.
5. Hogcock! / Last Lunch (season 7 Episode 12/13)
unlike most shows, one of 30 Rocks best episodes is its last one (or last 2 i guess). this episode starts off after TGS is canceled, wile Liz is living relatively happily at home with her new husband and adopted children, however she really wants to get back to work. luckily for liz, it is descovered that if Tracy does not do one more episode of TGS his contract says he will have to be payed $3 million. As per usual Tracy avoids work, and Liz must force him to do his job, however not in the usual way. this episode is packed with heartfelt dialogue and sentimental situations, including Liz having to get tracy to come back to work after he flees to a strip club where we first meet him in episode one of season one. wile in the club, he Explains to Lemon that he is just avoiding work because he doesn't want the show to end (tear jerker, i know). however the show is still packed with humor, humor that would arguably only work for a show like 30 Rock. for example, the last few moments of the show shows we zoom out to see Kenneth, now the head of NBC, holding a snow globe of 30 Rockefeller plaza. we hear Liz Lemons granddaughter pitching Kenneth a show about Liz's life, and her working on TGS. Kenneth replies "I know, i love it" as a ship from Star Wars flies past his office window.