I love Blender, and with the advent of Blender 2.5 alpha 2 I have been working through lots of tutorials to get up to speed with its new features (of which there are many). Here is a list of tutorial sites that I would recommend to everyone who is serious about 3D modelling. Most of these you have to pay for, but they are well worth it.
CGCookie Blender
Lots of great tutorials, going through creating a dragon, showing how to model a hand, head, eyeball, porsche, a mechanic, and many other tips and techniques and shapes.