I use OpenOffice on the mac, but make sure you use the Aqua version and not the standard version. You’ll bang your head against a wall trying to get it to work if you use the regular version, so just ease the pain and go with the aqua version. iWork is nice and for the price it’s definitely worth it, but I gotta support the Open Source movement so I’ve stuck with OpenOffice. Again, AQUA. =)