I think some Biellmanns are actually quite lovely. Radionova's double catchfoot layback and Biellmann position I forgot to include in my original list http://www.youtube.com/watch?v=UvgEAJan0nw&t=1m57s
As I mentioned, Biellmanns are just ugly when they look strained (ideally, both hands are around the blade and the back is arched with the head back).
And one of my favorite spins ever
http://youtu.be/M0fvU4wnp34?t=3m56s
This would be ratified under the IJS as a sit spin, but it wouldn't be a level feature, because it's not a "difficult variation" of the sit position, that's why we don't see spins like this anymore...I also tried to think about the question, if there are some positions that disappeared after IJS and the only one I could think of is this kind of a sit spin http://www.youtube.com/watch?v=OHfgjszz_Tk&t=120s. That's because it would no longer be ratified as a sit, right? The leg has to be bent at 90 degrees. So we no longer see sit spins with straight back as it's so hard to have your back straight and bend the leg so much. Is this right?
This would be ratified under the IJS as a sit spin, but it wouldn't be a level feature, because it's not a "difficult variation" of the sit position, that's why we don't see spins like this anymore...
I don't know what it's called, but I like this spin position a lot. It reminds me of a Biellmann, only the shape it creates is a little different, it looks less strained, and it's often done at the end of a camel spin instead of a layback spin.
My favorite camel spin is when the torso is not sideways, but facing down towards the ice. It's also interesting when the torso is facing upwards -- looks hard! I don't know what these different camel spin positions are called either.
Lately, though, I'm most mesmerized by Jason Brown's great catch-foot back layback. Just awesome:
http://www.youtube.com/watch?v=vjttZqY3rvA&t=1m23s