The first one looks like she's being choked by a tiny pair of mittens...
Exactly what I thought!!
I find nothing captivating about these from an artistic standpoint, nor do they have much merit from a technical standpoint either.
I suspect that they are captivating to you because they look different than most of what you've seen, which gives them a uniqueness in your eye. But mostly, I think they are captivating because you don't know how they were pulled off. As you learn more and more about techniques and how things are done, you'll be surprised how many images you used to think captivating were just so on the basis of their mystery of creation. Once you know the how, you'll find that a lot of the stuff used to captivate you so much was just bad photos with pretty good processing.
The same thing goes for lighting. So many people see images with in-your-face, complex, multiple light setups, and are all like, "OMG, that's so amazing! I'm so captivated by the lighting!" When in reality, they're just captivated by the mystery of how it was done. I went through the same phase. And the more I learned about lighting and began to understand how things were done, the more I realized that most of them were just pretty good lighting setups, for otherwise pretty crappy photos.
Post-processing and lighting are both nothing more then skills. Nothing more than means to an end. It doesn't matter if it was natural light on a cloudy day, or a 5 light setup. It doesn't matter if you spend 3 days in photoshop, or just bumped contrast and sharpened. The final result is what matter, and if under it all there isn't a good photo, than it doesn't matter what you pile on top of it. If all your photos have going for them is great lighting, then you're just a lighting technician. If all your photos have going for them is great post, then you're just a photoshop artist. Nothing wrong with either of those, I'm just saying. But if you make great images, regardless of how, then you are a photographer.
That's my two cents, atleast...