I feel like I've found this stuff way too late!! :(
This blog is incredible: http://characterdesign.blogspot.com/
Here are some background-type things which I LOVE. It's all just shapes and stuff but how they're composed! I definitely want to take this stuff on board in my next project.
Here's some character stuff too :) I really the shapes used. I'm really tempted to try this style in my Doctor Who stuff...