ListCurvePathPlot
Wolfram Kernel
Execution environment
Plots a curve that corresponds to a smooth path through the specified points
Example
Randomly sampled points on a circle
data = Table[{t Cos[t], t Sin[t]}, {t, RandomReal[{0, 2 Pi}, 50]}];
ListCurvePathPlot[data, Epilog->{Opacity[0.5], Line[data]}]
where the gray lines represent what would a simple line plot show.
Neat example
ListCurvePathPlot[RandomReal[{0, 10}, {2000, 2}]]