I was reading Muddy Colors
and kissed my lunch break goodbye when Dan linked to this collection:Character Design References on Pinterest
It's a great resource, meticulously organised, into boards for everything from anatomy (hands and feet - my nemeses!) to bikes and tanks. Note that it's a design reference collection, not photo reference, so if you're looking for real life reference to make studies it's not what you're after. But often looking at the awesome things fellow artists come up with can be just as inspiring, so go look!
(P.S. You can also follow me on Pinterest here - pinterest.com/phuriedae/
- but only do so if you can cope with a high volume of sinfully good looking food recipes - NOT mine, sadly - and have a burning need to know how I'd decorate my dream house