Absolutely I understand what you mean about 7-of-9's conflicted, ambivalent two halves of her personality. In the original "The Enemy Within" Spock said a very similar thing: "I also have two halves, human and alien, always at war with each other. I survive because my intellect wins out over both, forces them to live with each other, merge together." (or something like that, I'm paraphrasing the quote).
"THE KILLING GAME, PART II" - when the Klingons force Neelix and the Doctor to fight with them, and Neelix says "Qa'pla" while the Doctor goes "Tallyho", delivered perfectly by Robert Picardo.
During TNG whenever she actually eats icecream, she used to spit it out after the take most of the time. And she insisted on a light version of chocolate ice cream because it´s supposed to have less calories then the normal darker ones.
I am not even sure we ever see her actually eat anything, or put food in her mouth. Cinema is the art of illusion.
Seven with her cheesecake Janeway while being turned into a Borg (the acting's a little OTT but she has to be fighting it worse than the others) Any scene between Neelix and Tuvok Any scene between Seven and Janeway Every time a Borg Queen sees Voyager and seethes "Janeway!", complete with virtual mustache twirling One scene that culminates with the line "I'm not talking about the puppy." Harry Kim's well-acted angst in "Timeless" The crew getting to act all evil in "Living Witness" Any scene with the awesomeness of John Rhys-Davies Wasn't Chakotay topless in an episode too? Oh, never mind... The studio lighting would make the ice cream disappear - though the illusion is illuminated as having melted away in the bowl, hehe... But any individual food scene in TNG onward always just seems so warm and fuzzy and cool.
The "pon farr" program has now three possible outcomes, you get the girl, you fight against a rival, you fight against the girl... The last one was added thanks to B'elanna.