It would be so hard to just list one or five or 10 hahaha
The Cloud - My introduction to Trek, Voyager and Janeway. I found it through channel surfing. I didn't even catch the start of the episode but when Janeway said "There's coffee in the nebula" my fate was sealed.
Parrallax - Just a cool concept. I also love it when Janeway and Torres work together. They make a great pair.
Deadlock - What is better than Janeway? Two Janeways of course. That and the fact Janeway and Torres again work together.
The Thaw - JANEWAY: I've known fear. It's a very healthy thing most of the time. You warn us of danger, remind us of our limits, protect us from carelessness. I've learned to trust fear. JANEWAY: Starfleet captains don't easily succumb to fear. Enough said.
Tuvix - Funnily enough i don't enjoy watching the episode but the ideas it deals with are very though provoking.
Eye of the Needle - I loved everything about the episode.