Drawing Eyes!

This one features Adam Hughes, amazing comics cover artist...

...And here are a couple of vids by Sam Prokopenko of  Proko.com

Drawing Made Easy by E.G. Lutz

View and download the pdf here:
http://www.scribd.com/doc/132118642/E-G-Lutz-Drawing-Made-Easy

A charming book from the past that very clearly shows how to draw using simple shapes.