http://www.3dlessons.com/tutorials/A-Dolphin-72337.html
http://www.3dlessons.com/tutorials/Modeling-a-Human-Hand-14688.html
This one has several follow-up videos:
http://www.3dlessons.com/tutorials/Modeling-a-Human-Head-Part-1-51470.html
some tutos about "architecture" may be how to transform blocks in transparent flats ? and some sun in the plastic kitchen ...but read in the comments, some good links there too...