Noblesse Oblige.

Naruto is even worse than Bleach for fillers. Bleach had roughly 3 arcs/seasons of fillers, but Naruto unfortunately has a lot more. Innocent non-manga-reading Naruto watchers are misled into thinking they are watching canon material because the producers try so hard to transition between actual plot and filler plots. Despite this, it is my goal to save watchers from non-canon material by listing the filler episodes that can skipped without missing any vital plot.

Quick run down of filler episodes:

~Naruto~

Land of Tea miniarc - episodes 101 - 106

Random Shit - episodes 136 - 219

~Shippuuden~

Sora arc - episodes 57 - 71

Three Tails Bijou arc - episodes 91 - 112

Skip these episodes and watch all canon material! Naruto will be a lot more enjoyable =P.
Because the producers transitions between canon plot and filler plot, there are some important developments at the end of filler arcs. Similarly, there are unimportant filler developments at the end of canon arcs. The suggested advice would be to watch the last few minutes of last episode of filler arcs xP.

Unlike Bleach, I did not watch most of these Naruto filler arcs because they are so ridiculously stupid. Thus, I will just list some reasons why I did NOT watch them haha and a short summary of them based on my limited knowledge.

Land of Tea miniarc (101 - 106)
Naruto, Sakura, and Sasuke find out their newest mission will be to protect Idate from attacks by the enemy clan, during a race. Very underwhelming arc, don't watch it please.

Random Shit (136 - 219)
Yes you read it right - 83 episodes of fillers...
DO NOT WATCH THESE EPISODES!! =[[. This span of almost FOUR SEASONS are nothing but craps fillers!! It is a mix of pointless miniarcs and random shit like bug catching. Please save your time and do not watch these! I fell trap to about 1 season of this shit before I realized I'm basically watching nothing.

Sora arc (Shippuuden 57 - 71)
Sora's dad infused some excess Kyuubi chakra into him so he is a pseudo-Jinchuuriki (only interesting thing about him). As a result, he is alienated by villagers and becomes another Gaara to Naruto. This whole arc is a ploy by the producers to give Kyuubi Naruto (and Asuma) more screen time. However, this effort generates a lot of powerconfusion and anticlimax to when Naruto first became 4-tailed Kyuubi. It should be noted that Naruto decided to never rely on the Kyuubi's power again because it hurt Sakura, yet here we have him transforming like no other in a filler. I personally only watched 2 or 3 episodes of this filler when it was nearing the end, but I wouldn't recommend anyone else to watch it. Nevertheless, I should note that I did hear some people say that this is the only decent Naruto filler arc. If you decide to skip it, make sure you watch the end of episode 71, because it introduces some new Akatsuki members and another Jinchuuriki.

Three Tails Bijou arc (Shippuuden 91 - 112)
So basically what happened in about half a chapter in the manga, took them a whole season to animate. This is the point when I gave up Shippuuden >_>. Instead of Deidara and Tobi coming in to capture the Sanbi, the producers made up a whole array new crap characters with new jutsu (Crystal style...) that try to capture the Sanbi or something. After 20 odd episode, they fail in capturing the Sanbi, AND THEN Deidara and Tobi comes in and captures it for Akatsuki. This basically means the whole filler arc was pointless =P. So take my advice and don't watch it. If you took my advice, make sure to watch the latter half of episode 112 because that's when Deidara and Tobi comes in and make the whole filler season void. Furthermore, Gurren is a filler character that works for Orochimaru, and she was inserted in episodes 89 and 90 to make her look legit. Disregard her existence please =P.