Hello,

for those who are afraid of Metapost (or simply think that it takes
too much time to program a simple figure with not too fancy features),
there's a magnificent point-and-click tool for creating mathematical
drawings with "perfect precision" and TeX labels matching the style of
your document.
(If you want to find itersection of curves, or curves going through
several points, you don't need to "pretend that you have hit the
intersection" as you would do in Corel Draw.)

The prerelease version has TikZ export (with plain/LaTeX/ConTeXt
support included).
   http://www.geogebra.org -> future