The best way to make a clean colour change in crochet. By June Gilbank (www.planetjune.com)
Note: although I demonstrate using single crochet stitches, for amigurumi, this also applies to other crochet stitches - always make the colour change at the last step of the stitch before the new colour, or you'll get that ugly dot of colour where you don't want it!
Left-handed version: http://youtu.be/_O6CwwaURuI
For more crochet tips and tutorials, see http://www.planetjune.com/help