I've given it a one month long active workout.
My experience is no different than what has been published in reviews too numerous to cite.
If you like this sort of thing, you're all for it. If you don't like tinker-toy desktop metaphors with a 60s era Fisher-Price color scheme (hello Windows 8?), you don't like it.
As you might have guessed, I don't like it, want it, or need it.
And to Renegade's earlier point about "not getting it" I think he doesn't give himself enough credit. I think he suspects he didn't get it because - despite assurances from Unity's creators and advocates - there isn't really anything special to "get." Much like Gertrude Stein famously said about Oakland California: "There is no there there."
Unity
isn't a breakthrough. Nor does it offer any real innovation (so far) to the user experience. It's just
a different way of doing things you can already do (often better) with established desktop environments.
And being 'different' largely for the sake of being different has never been a compelling argument to me.
P.S. I find it ironic that something that has caused so much division in the Ubuntu user community was christened with the name
Unity. Makes me wonder if somebody behind it has a truly warped sense of humor.