I think you are after epi 135 (part 1)
No, Neji is dead, i just dont know what episode
Neji doesnt have Sharingan
On episode 59, you see Tenten training with Neji for like 4 seconds that all I found.
ep 30
~Kimimaro dies in episode 127
In naruto shippuden episode 14: water prison scene
neji doesn't fight kimimaru. lee does... in a very weird way... a sake way.... you have to watch the episode yourself... oh yea gaara is in it too..
In the "Naruto" series, Neji helps Hinata in episode 166 of "Naruto: Shippuden." During the episode, Hinata faces a challenging situation where she is temporarily blinded by a technique used by her opponent. Neji provides support and guidance, demonstrating his growth and the bond between them as members of the Hyuga clan.
they fight episode 46 - 47
Episode 28
Oh, it was in this one episode where they were talking to this guy and Tenten thought they were going to get extra pay so she was all happy.
Neji fights Naruto from episodes 60-62. Neji tells Naruto his past, and i have to say, it very deep (;D). As a bonus to your question, he is in episodes 22-25, then briefly in episode 27. Also in: 33-34 and they show him in 37. From episode 38-50 they show him and he speaks a little, and in episodes 46 and 47 he fights Hinata.