I actually like OpenOffice and NeoOffice. I prefer NeoOffice since it is more Mac-ish in look and somewhat in feel. Sure, it's nothing like some of the commercial stuff out there that's more Mac-like in look-and-feel, but consider that this project has only been active in the past few years on the Mac. This wasn't even an option before, and Linux and Windows had it for much longer (OO.o actually looks and feels much better on those platforms right now).
Granted, OO.o uses X11 but that's a minor detail I can live with (especially having dealt with X Windows on Linux/*BSDs). They are supposed to be releasing a more Aqua-ish version of OO.o in the future....I just don't know how far off that future is.