A wild and eclectic sound best described as Avant-Garde Symphonic Black Metal (or something of the sort), has a chaotic sound but is more structured than Unexpect, though I see certain similarities at points. However, this band delivers extreme metal with an avant-garde and symphonic twist at times. The Serpent's Manifold (their newest full-length) is ominous and eerie at points and heavy without being overly oppressive. Well, my descriptions may be different from what you hear, so just take a listen (especially you, Knight, I think you'll like this band)

Dimension Hell
http://www.youtube.com/watch?v=KJS1Hfw5G4s

The Four Scissors
http://www.youtube.com/watch?v=9ZYItWEnwpc

Infinite
http://www.youtube.com/watch?v=42GZ7OUNdAA

Holy shit! Excellent find, I must get more of this...any recommendations as to where I should start?

I knew you'd love it

Well, they're an awesome band

...though I must disagree on one point you made, I'm not hearing too many similarities to Unexpect aside from the piano and varied vocal styles, plus Unexpect has more of that focus on deranged circus music...incredible band, regardless, will have to get some of their works

It's only in some songs, really, like The Serpent's Manifold that they sound a bit like Unexpect, but like I said, they're more structured. And the main comparison was the chaotic sound with the keys, violins, and BM vocals. If I had to put anyone in the same genre with Unexpect, it'd likely be these guys is all I'm saying.