Smoothed lines

I follow this list rather closely so I am hoping that I haven't missed
something obvious here.

I am trying to plot a line graph with pylab.plot. I was wondering if
there is an easy way to plot a smoothed line graph like excel does by
default. I could obviously apply a signal filter but I was wondering
if there is a simple user friendly way to get something like excel
does in matplotlb without the user having to know about signal

Any help would be greatly appreciated.

And, John and company thanks for a brilliant piece of software.