If you are an Apple MAC fan and want to use OpenOffice, you are stuck with a version that needs X Windows, which is reportedly slow and looks and works like an alien in NY. Your alternative is NeoOffice, which has a more integrated look and feel but still is reportedly slow.
However, there is hope. The Open Office community has started a project to port the program to Mac OS X and do the work required to integrate the Aqua UI and other Mac OS X goodies. The bad news is that this work will only be included in Release 3.0, scheduled for the fall of 2008. But I found developer snapshots of native Open Office for Mac OS X and reportedly the version “OOH680_m4” is quite stable and does its work surprisingly fast.