Please add some sort of option to render smooth line charts. These hard edges are a bit ugly sometimes :)
Do you mean some kind of bezier curves chart? Or any other interpolation algorithm? Pycha's Line chart are very basic and just 'connect the dots'. Maybe your dataset has not enought points?
Can you point me to an example of a line chart you like?
Yea, I mean bezier curves just like http://www.telerik.com/help/aspnet-ajax/understandingtypesbezier.html shows and many other libraries support.