Had a little fun with these three scripts a few months ago.
They were created by modifying the sketch script.
Tried to combine them into one script with a selection table, but was unable to get the selection to
work alongside pointstreampicker.
Note that snap settings and mouse speed change the curves created.
Never did create a "FairCurve" script.
-Brian

Hi Brian, those are kind of funny! That's basically how the regular Sketch curve would look like if it didn't go through a smoothing and simplification process.

- Michael

Thats the sketching/scratching that this guy was talking about here:

http://moi3d.com/forum/index.php?webtag=MOI&msg=5902.4

Yes :-)

I was thinking the polylines could be converted to many clothoid segments.
The points and tangents are there. But some might become curlycues...
Do not know if it would be worth it though. The regular sketch tool works well.