For whatever reason as of writing this I don’t have Manly Guys Doing Manly Things on my recommended webcomics list. It is possibly my favorite video game/pop culture humor webcomic (not to hate on Penny Arcade) and I totally recommend that you should check it out.
The thing is that Coelasquid, the artist and writer of the comic who is a professional animator (she did work on Ugly Americans for one thing), also does some really great articles on animation, drawing and a lot of other things that are both informative and well-written. The most recent one on the Uncanny Valley got me to want to link so I am. Check the comic out and check out these articles!
The Uncanny Valley
Drawing Advice And How To Improve
Macho/Manly
The Mary Sue
Tutorials
And there is totally more stuff that you should check out!

Also on a totally different note about uncanny valleys that comes up whenever I hear about an article on the topic – What do you call a robot vagina? An uncanny valley! (And yes I am secretly 5 years old)