Good OSS Project for REST / Resource Examples


I'm pretty new to rails, though not to web development generally. I love
the simplicity of the RESTful controller design approach - many small
classes with less responsibilities sounds good to me - but I'm
struggling to find any rich examples that will answer the questions I
have as I try to apply the principles in the real world.

Some good resources I've found have been
* railscasts routing episodes:
* jamis buick's blog:

...but I still feel like I'm thrashing around a bit.

So it strikes me that the best thing would be too root around in someone
else's code. Can anyone recommend an open-source rails app which would
serve as a guiding light to me on my quest?