Speaking of which, it's time for...
"Phage"
When I found out they took Neelix's lungs, my wife and hi had this exchange:
ME: "Hey, it's like a serious version of Spock's Brain. You know which one that is, right?"
SHE: "BRAIN AND BRAIN WHAT IS BRAIN?"
Is she a keeper or what? She also points out random occurrences of the number 47 to me.
So, onto the episode. Some legitimately creepy stuff with the lung thieves, and some really good moments from Neelix. He's still not growing on me, but this is a good episode for him.
I thought Janeway's speech to the Vidiians was a total disaster. Basically, it came down to "if you do that one more time, I'm going to get angry." We could have used a little Robau-esque "What gives you the right..." instead of that "Starfleet principles" speech. And then to just let them go?
The "good guy" bad guy made everything better in the end, but it was a quick way out of a real moral dilemma. And how come Janeway was able to pull the trigger on Tuvix, but wouldn't at least see if the doctor could hack out one of the Vidiian's lungs and give it back to Neelix?
It just seemed like they made what could have been an incredible episode a little too easy.
They couldn't give the lungs back to Neelix because they were (if you believe the aliens) irretrievably changed to suit Vidian physiology.
Also, in a Star Trek Morality play, its always better to TRY and leave two people alive rather than kill one for the good of another.
And, as has been noted above, she did go postal on the Vidians in "Deadlock".

Oh... and you ARE right, your wife IS a keeper.
Now... lets just hope she says the same about you when you watch HER fav shows!
