First off, great UI! Then some bugs...
It's excellent to finally see jQuery getting its own UI. Hopefully a
great UI for a great JS library!
Just thought I'd point out some of the things (bugs) that I found when
trying the demos:
Lots of things not working in IE7 or look really bad (Tabs, Sliders,
etc), but from the blog post I guess that you're already aware of
that.
The demo app looks great in FF2, but if you have the image size set up
a bit so that the page get vertical scrollbars, the mouseover zoom
effect places the picture in the wrong place if you're scrolled down a
bit.
Not sure if these things qualify as bugs, just thought I should let
you know!
/Anders