Based on lessons 1, 2 and 10 of the excellent "Learning WebGL" blog (http://learningwebgl.com/blog/). I began to throw a lot of triangles since my final objective is to draw a 3D chart. My example can be found here, and of course demands a WebGL-enabled browser (Firefox Minefield, Webkit daily biuld, or perhaps Google Chrome).
(Para leitores brasileiros: lembrou vagamente a vinheta de entrada do Video Show, seria só uma questão de botar texturas em cada pedacinho para ficar mais parecido.)