Complete list of Yamashita's work
I realize trying to describe animation with words may not be the best thing, so here's a list of basically everything he has done since he started working on Naruto. There is no official confirmation on this list, but I'm 100% sure of most of the stuff there. When I'm not 100% sure, I point it out.
ep 17: most likely scene with Naruto waking up right before the OP, possibly everything before the start of the OP (approx. 2:44 - 3:27)
ep 20: omake
ep 21: most likely the Neji vs Neji scene (approx. 7:36 - 7:56)
ep 25: could have done anything from the beginning of the second half to the end of the Kakashi flashback (approx. 11:08 - 13:14)
ep 26: possibly Sakura and Chiyo vs water lasers (approx. 4:06 - 4:27), and the part from 13:16 to 14:02. Also, omake.
ep 29: not sure what he did here, maybe the last rasengan attack. The mid-air rasengan scene is what stands out the most, but I can't relate it to his style.
ep 33: scene with Lee and Gai before the OP (approx. 1:42 - 3:18); omake.
ep 39: from Yamato handing the photo to Naruto to the four of them jumping away (approx. 0:55 - 2:53)
ep 40-41: the four keyword Special scenes.
ep 41: scene that starts with the shot of Naruto's peeled off, scary face and ends after Yamato's Mokujou Heki (approx. 17

- 18:02); omake.
ep 45: scene with Sakura jumping from tree to tree, then missing one and falling (approx. 12:52 - 13:13); possibly the first 2-3 minutes of the episode too.
ep 51: scene that starts with Sakura noticing Sai at the end of the corridor and running towards him and ends with her going "Sasuke-kun...?" (approx. 13:17 - 14:16); omake.
ep 51-52: the four keyword Special scenes.
ep 53: scene that starts with Sasuke swinging his sword around and ends before Sakura's sad face (approx. 6:35 - 7:44).
ep 57: omake
ep 59: scene that starts with the coffins spinning and going underground and ends with the first half of the episode (approx. 9:54 - 11:12); scene that starts with Naruto's team noticing the earthquake and jumping away and ends with Sai making a seal (approx. 12:46 - 13:13).
ep 63: the whole flashback with young Asuma (approx. 15:36 - 16:49).
ep 65: first 30 seconds of the episode; toward the end of the episode, scene that starts with Sora going "You don't know anything about me!" and ends with the start of the flashback (approx. 14:25 - 15:52).
ep 67: last 30 seconds of the episode.
ep 71: scene with Naruto and Kyuubi Sora that starts right after the Asuma/Kazuma stuff after the OP and ends with Sakura saying "Naruto" (approx. 2:57 - 3:55); Naruto's last punch to Kyuubi Sora (approx. 13:16 - 13:25).
ep 77: scene that starts with Asuma throwing his blades and making a seal and ends with the end of the episode (approx. 18:37 - 19:14).
ep 85:
- scene that starts with Ino falling on the ground after the explosion and ends with the start of the OP (approx. 0:30 - 1:00);
- scene that starts with Hidan jumping at Chouji and getting blocked by Kakashi and ends with Kakuzu kicking Chouji into a tree (approx. 6:15 - 6:35);
- possibly the scene where Kakuzu drags Chouji out of the tree, then get distracted by Ino's kunai and then avoids Shikamaru's shadow (approx. 7:34 - 8:16);
- possibly the scene that starts with Hidan landing on a tree (right after the Kakashi/Kakuzu fighting scene) and ends with him avoiding Shikamaru's blade and landing on his schythe. (approx. 15:05 - 15:35)
ep 88: scene that starts with the shot of Kakuzu's hands during his final transformation and ends when Naruto's clones appear (approx. 15:36 - 16:06)
ep 93: scene that starts with the frog yawning and then falling asleep and ends with Jiraiya exiting the scene (approx. 5:41 - 7:07)
ep 99: scene that starts with Yuukimaru shouting "Guren-san...!" and ends with Guren's wheel attack getting crushed by the Three-tails (approx. 15:28 - 16:28)
ep 101: scene that starts with Yamato making a seal and ends with the start of the OP (approx. 2:13 - 3:52); omake.
ep 120: fighting scene between Kakashi/Obito and the bad guy in the cave. Starts with the start of the battle music and ends with the bad guy falling to the ground.
ep 123: scene that starts with Sasuke running towards Deidara after he summoned the C2 dragon and ends with Sasuke stepping on a land mine and making it explode (approx. 8:40 - 10:00).
ep 131: scene that starts right after the last flashback of the episode and ends after the rain of blood (approx. 18

- 19:53)
ep 133: scene that starts with the camera zooming out from Jiraiya's eye and ends with the explosion (approx. 17:02 - 18:28)
ep 137: scene that starts as Itachi is jumping between the two giant shukriken and ends with the shot of Itachi's left sharingan (approx. 9:27 - 10:16)
ep 141: scene that starts with Madara untying Sasuke. Goes all the way to the end of the episode (flashbacks excluded) (approx 14:36 - 21:03)
ep 143: scene that starts right after the OP and ends with Sasuke's sword falling and getting stuck into the ground. (approx. 4:09 - 5:19)
ep 149: scene that starts with Naruto and Utakata entering the ghost town and ends with the zombies that are about to attack (approx. 15:52 - 16:57)
ep 153: scene that starts right after the OP and ends with the last shot of Tsunade before going back to Naruto; scene that starts with Sakura talking to Shikamaru after Tsunade has left the room and ends with Tsunade crying.
ep 173: scene that starts with the rods on Pain's back breaking and ends with the end of the episode (approx. 18:51 - 20:03)
ep 178: something in the second half, not sure what. He's also AD for the second half.
ep 186: possibly the scene where Lee drops the bottle, Naruto picks it up and then drinks it (5:08 - 6:21) and the Naruto rendan scene (17:24 - 17:46). He's also AD for the episode.
ep 198: He's the episode's AD.
ep 204: Episode AD; possibly the scene that starts with Mifune jumping at Sasuke and ends with the first half of the episode.
OP 2: Sakura avoiding attacks and then throwing a punch
OP 3 filler version: Sora's attack
OP 3 H&K version: part that starts with the camera spinning around Hidan and Kakuzu and ends with the shot of Shikamaru extending his shadow.
OP 4 H&K version: scene with Gai, Tenten, Lee and Neji jumping through the forest (3 seconds long); Naruto's rasengan attack; H&K scenes from OP3.
OP 4 filler version: Everything that replaced the H&K scenes.
OP 5 v2: most likely Sasuke slashing crows, then attacking Itachi.
OP 6: Sasuke vs Itachi sword fighting right after the title, including the close ups on their faces.
OP 7: Everything from the initial explosions to Konan evading Sakura's punch.
ED 6: Camera spinning around Naruto and Sasuke?
ED 8: Ino/Sakura/Hinata dancing figures, possibly everything before that too (first 20 seconds of the ED)
ED 10: Some of the still shots. He's probably done more but I can't tell what.
ED 12: Something in there. He's also AD.
ED 15: Naruto vs Neji. He's also AD.
NS Movie 2: He did something in there, but I need to check that movie again to find out what. The scene with Sai attacking the flying ninjas from the sky might be his work.
NS Movie 3: Restaurant scene (possibly only the second half, approx. 4:52 - 5:57); rocks falling on Sand ninjas (approx. 13:45 - 14:02); from Shikamaru looking at the bad guy to Naruto getting Rasenganed by the bad guy (approx. 1:17:23 - 1:19:30)
NS Movie 4: from Sakura riding Sai's beast and dragging Naruto out of the explosion to Sakura, Sai and Yamato sighing (approx. 1:23 - 2:06); from Naruto running towards the bad guy to Yamato getting dragged into the explosion (approx. 4:17 - 4:34); Shot of Naruto raising the tornado Rasengan over his head and start of the attack (approx. 1:12:11 - 1:12:16)
Colorful (movie, nothing to do with Naruto): Scene that starts with the kid taking an envelope out of a drawer and ends with his mom (I think it's his mom) going after the girl (approx. 1:04:03 - 1:05:15)