Good Scatter-plot plugin for JQuery (sample pic included)?

Personally I love this:

http://omnipotent.net/jquery.sparkline/

See if this is enough for You. It won't get easier and more comfortable.

[and it has lots of samples on main page :)]

FLOT is a really nice charting plugin. It doesn't specifically support scatter charts (to my knowledge) but it does support point charts. Check out the usage page for some examples on how it has been used to create scatters.