Enterprise Season Three has been touted as one long episode, and I have to agree, but I liked it just the same. Yes there weren't 20 something episodes about different planets, exploring space, meeting and greeting resident and hostile alien species. This was one season, full of one basic storyline, saving earth from the xindi weapon. Crossing into the expanse was as if the crew was crossing into "junior" year of space school, no more fun and games its time to get serious and think about the future. We get to see the crew of the enterprise grow both internally and closer to eachother, especially Tripp and T'pol. The Resident science officer , to me, had the most story lines revolved around her next to the captain of course. T'pol was exploring her own emotions, relationships, job and love life throughout , talk about character growth! My favorite episodes, although all of them were amazing, were:
Impulse-I love me some zombies, and I loved me some Vulcan zombies even more! Trillium infected vulcans are downright frightening, and even worse was T'pol getting infected by it, although I loved seeing her flip out.
Exile- This was the most "Buffy-like" episode of star trek I have ever seen for some reason. Maybe it was the demon like telepath who got a hankering for Hoshi to become his consort till death, or maybe it was the whole crystal thing he used to magnify his powers, I still liked it though.
Twilight- Captain archer gets a spacial parasite thingee in his brain and his short term memory doesn't work, so we see the future where earth is gone and the xindi are hunting down leftover humans, and more importantly we see how loyal and loving T'pol really is towards Archer. I cried my eyes out in this one.
NorthStar- I have always always always hated "Trek Westerns" where on star trek they find some alien planet that has some random western motif going on, its always cheesy with its pink skyline and tumbleweeds. BUT this episode cured that hatred, it actually made sense! Aliens kidnapped humans for slaves, brought them to a planet, and the humans revolted, but never evolved technically or socially. Archer looked darn fine in that hat.
Similitude- Tripp gets hurt, and Phlox makes a clone of him called "sim" to transplant brain matter to tripp and save his life, Archer makes the decision to go ahead with the clone, and realizes that its not so easy to create a life that is sentient and than later have to kill it to save another life. We get to see, via "sims" memories from tripp, that he likes T'pol in a romantic way, and she is so sweet to give him that kiss, I seriously cried again.
Proving Ground- I am in love with the Andorians, Commander Shran is freaking brilliant, adorable, and one of the best aliens ever on star trek. He is both enemy and friend, and this is the episode that shows that dichotomy I love the "we have come here to get some....archerite from this planet"
Doctors Orders- God, I love Phlox and a whole entire episode devoted to him? Heaven. The crew is in a stasis state and he must take care of them while they travel 4 days, he starts to hallucinate, get paranoid, and eventually has to save enterprise by himself!
There are too many to list, too many good ones. The spheres, the 5 xindi species, Degra, the constant interference from Daniels, the cliffhangers, its all just such amazing TV I cant understand any Trek fan, or sci fi nut who wouldn't love this, totally worth the bucks.