Season 3 finds the crew still on their roughly 70 year voyager home after getting flung into the Delta Quadrant of the galaxy.
All the characters continue to develop but this season had particularly good episodes for The Doctor and Kes.
The Doctor keeps evolving from his initial holo-programming and after one weird time travel episode he gets the technology to have a portable holo-emitter which allows him to finally walk wherever he wants. It's used to great effect and he has some fantastic episodes. I love seeing his personality continue to grow and I'm convinced that he's one of the best actors on the entire show.
Kes' telekinetic abilities keep growing. Sometimes they get out of control and sometimes they develop at a reasonable pace. It's obvious by the end of the season that she must be nearing the end of her story arc. I think next season is where she leaves and they bring on another crew member as a replacement.
Finding Voyager has made Star Trek fun again! I hope the show keeps up it's quality throughout the entire run.