I've seen a lot of different Windows Mobile shell replacements, but none as sexy as PointUI. I caught wind of it from Mr. Mobile's blog, and it looks really freakin sweet. I don't know how they achieved such a clean animation, but I can't wait to try it out. It goes live tomorrow, I'll have a review of it online next week. In the meantime, check out these videos.
This might just put Windows Mobile 6.1 to shame, and it's not even out yet.