Die Flash, Die!
If you hate using Flash for your chart needs or just want a modern solution that will work on all devices, here are some alternatives:
1) Morris.js, based on #jQuery and #Raphaël , will give you beautiful looking line charts http://bit.ly/IqRdA9
2) From the maker of Highslide, Highcharts provides a range of chart options and works with either jQuery, #MooTools or #Prototype frameworks http://bit.ly/IeyibA
3) jqPlot is also based on jQuery and provides several types of charts http://bit.ly/IFBNml
4) Flot is another jQuery solution with support for lines, points, filled areas, bars and any combinations of these, in the same plot and even on the same data series. http://bit.ly/HwGGEk
If you have any other suggestions, drop them in the comments ;)