Mild Spoiler Warning!
To sum this episode up in one word is "surprising". Coming in to 10x06 "Harvest" I was not looking forward to the premise of the episode. I assumed it was going to be a filler episode. It definitely was not. I'm going to talk about Clark and Lois's storyline first.
The Clois storyline started off with Lois questioning Clark about all the odd things that happened throughout the series and if it had to do with Clark's Kryptonian heritage. I thought that scene was pretty funny and all the callbacks were really nice. I know some people are mad that we didn't get to see Clark actually tell Lois that he is Kryptonian but I didn't really mind. The whole sacrificial village was actually kinda cool. It really felt like an old Smallville episode with kryptonite affecting people. The way the writers integrated blue kryptonite in the story didn't seem forced at all. The acting was spot on from Tom Welling(Clark),Erica Durance(Lois),and the villagers. The end scene with Clark and Lois was great. I'm so happy the producers are pushing this Clois relationship earlier in the season because I'm sure these characters are going to be very busy as the show progresses to the final episode.
Now for the little Lex storyline. It was by far the best part of the episode for me. Connor Stanhope played an amazing little Lex Luthor. I was really worried how the writers and producers were going to deal with little Lex but now I am totally confident with what they are doing. Cassidy Freeman did great in this episode as Tess Mercer trying to help Lex grow up into a respectable young man. Seeing little Lex recall past scenes and episodes about his memories of Clark was so eerie and nostalgic. Seeing little Lex shave his head and give that sly grin was creepy and Michael Rosenbaum-ish. I am totally okay with this little Lex growing up to be the Lex Luthor that Clark must fight as Superman. After seeing this storyline with Lex, my need for Michael Rosenbaum to come back as this little boy grown up has intensified greatly. I hope Michael watches this episode because its impossible for him to say no after such a great storyline.
Here is a quick overview of the good and bad:
THE GOOD :
+ Nostalgia; Many callbacks to previous episodes
+ Class Smallville story
+ Lex "fricking" Luthor!
+ Clois romance
+ Great acting
THE BAD :
- Missed out on Clark telling Lois he is an Alien
Overall it was a great episode. To be honest, it is my favorite episode of the season. It gets 5 bald heads out of 5