Episode 236 Friends you can count on
Quite good due to the fact that it shows that even Shino has his weaknesses/natural enemies. It also delves into the relationship of team 8 as well as Shino's psyche. He seems more complex due to being plagued by self doubt in regards to his skills and being helpful to his friends.
It is quite subtle in a way as normal animes/mangas kind of beat the message "Friendship is awesome" really into our head. The framework of Shino teaching the younger generation also worked well as a story telling device.
Episode 190 Naruto and the old soldier
Naruto working with the legendary 1000 year Genin. It is kind of a slice of life episode as we probably all know people who do not want to take additional responsibilities due to fear of failing.
In this case that guy's personality kind of reflects on Naruto's personality in an odd way as both are not able to take on the role of leader. Naruto due being brash and forward and Kosuke due to having lost comrades under his leadership. The part about both of them being powerful Shinobi easily above Genin level and still working in that rank shows that power is only a small part in the ranking system.
Kosuke's flashbacks to the previous Hokages also worked very well and gives us a nice impression how charismatic the previous leaders were in their own ways.
Episode 191 Kakashi's love song
This episode shows us more about the Torture and Intelligence department. It is quite refreshing to see what happens after the fighting as we are usually only seeing frontline stuff.
This episode also shows us that Japanese anime has more balls than Western cartoons as I can't recall an instance of seeing a woman being savagely beaten to gain information from her. Furthermore, the torture department is not all about rape as some fanfics like to suggest.
As the title suggests there is also a love story between Kakashi and that Kunoichi, which of course made Team 7 quite curious and we get sort of a repeat of the Kakashi's mask episode. In other words the comedy works. Also the feelings between Kakashi and Hanare are quite believable as there seems to be a chemistry between those two. The part of them having two different allegiances that works against them is nicely interwoven into the story.
Honourable mentions:
Episode 182 Gaara's Bond
Episode 230 Revenge of the Shadow Clones
Episode 235 The Kunoichi of Nadeshiko Village
I'm quite on the fence in regards to
episode 182. It could be considered good, but then there are things that are rather cartoonish like Kakashi's use of the Raikiri and Naruto being a bit too obnoxious. I would have preferred him to be more understanding of Gaara's situation instead of being downright hostile. Furthermore, the subject of Gaara being feared by his own village has been already addressed in the manga.
It is a watchable episode, but as I said the subject of Gaara being feared by his own subordinates is nothing new. However, Sunagakure being divided in two factions due to this issue was quite interesting. The resolution of this, however, was too cheesy for my taste.
Episode 230 has been addressed in several fanfics, so it was nice to see it down in the anime at least. Basically Naruto's Kage Bushin develop a bit too much of a personality and start a mutiny.
The good parts are seeing Gai with slicked back hair and the different aspects of Naruto's personality reflected in his clones. Also the humor was quite good and Naruto's clone behaviour rather competently when fighting Gai.
The problem with this episode is that it is too obvious with it's set-up as we see Naruto's out of character behaviour right after a certain incident that makes it obvious what the set-up is. I just can't imagine Naruto to be such an asshole. Even Gai points out that he shouldn't be like that.
This episode is also watchable as the flashbacks are pretty well integrated and shows us the complexity of Naruto's character. It might also be considered a foreshadowing to Dark Naruto, but I have my doubts that this is the case unless there is flashback to this episode.
Episode 235 is also sort of good, but rather bad in some instances. Basically Jiraiys fought a woman from a ninja village in which the women have to be defeated by a man that is stronger than them. This is the only way to get married there as this is a tradition of that village and the population is 100% female. So we get an Amazon theme in this episode.
The best part is the flashback of Jiraiya talking with the mother of Shizuka. It explores his unrequited love to Tsunade and her emotional troubles after Dan's and Nawaki's death. Shizuka's history also adds nicely to the episode. The scene is which is was implied that the a faction in the village killed the love of her life, as that person was just a weak merchant, is quite dark and fits the whole ninja/amazon theme.
The fight with that one puppeteer and Naruto vs Shizuka have been also quite interesting. It showed us that deception plays a big role in ninja fights and flashy techniques can be simple disguises to win the battle.
Of course this episode is still on the honourable mentions list, so you might wonder why. Well, to put it simple, love in the Narutoverse is freaking messed up. The explanation given by Naruto after Shizuka's defeat felt just so wrong.
Sacrificing your chance for the happiness of the person you love is good. That part is understandable and noble. The disturbing part was the morale of stalking the person you love, but not forcing them into loving you. What the fuck?!
Jiraiya's explanation and Naruto's mirrored each other, but the last part of Naruto's made him down right creepy to me.
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As you might have noticed all those episodes were filler as discussing episodes that have the same content as the manga seemed pointless to me. If you liked something in the manga then there is a good chance you will also like it in the anime.
The Pein fight might be an exception due to the bad animation, but personally I loved it. I was reminded of my childhood when I watched Loony Toons all the time. That fight is a guilty pleasure, but nothing to be ashamed of. -_-