I'm looking for a good Mac OS X native program that has good graphing abilities. AppleWorks isn't an option, because it seems that you can't do simple scatter plots (despite the fact that it has both "Scatter" and "X-Y Scatter" options, I can't for the life of me figure out how to be able to set both X and Y coordinates for scatter points). MS Office is not an option, because I'm not purchasing Office/Excel just for graphing abilities. And ChartSmith is a very poor graphing program. So with those choices out of the way, does anybody have any good recommendations?