The GUI of O

rg 3.0.
To explain in more detail, (I hope I'm saying this part correctly) the GUI of OOo used to run under X11 on Macs, as it does in Linux. On Linux, this was fine, since essentially all Linux variants use an XWindows based environment (Gnome, KDE) anyways, and so OOo is running in the default environment in Linux anyways, and has access to all the graphical tools Linux has. On Macs, while X11 is available, the Xserver is
not started by default, and Aqua is
not an XWindows environment. So OOo was running in a secondary environment, which meant that keyboard shortcuts were not the same, drag and drop had limited functionality, and window behavior was not exactly the same as Aqua windows, etc. It also tangentially meant that the icons and such did not look like typically icons specified by OS X human interface guidelines.
But
that was the thing that was finally fixed with OOo 3 -- the fact that it now runs on the same window environment as the rest of your apps on your Mac. That doesn't mean the icons or interface look fully like other Mac apps. It just means it runs in the environment. As an example, there are varying degrees to the extent which ... iTunes, MS Word, Adobe Photoshop, and, say, a Mac native open source app like... Adium... "look Mac-like," even though they have all been available for years in the OS X Aqua environment. That part hasn't changed. People still argue about whether Firefox looks enough like a Mac application, and some people use Camino specifically because they feel Firefox does not look or behave like other Mac apps.
P.S. Are you saying OOo 3 does
not use Tango as its icon set by default? I wonder why OOo decided to
not use Tango icons to begin with, at a time when Firefox, GIMP, and most other Linux apps do.