We loved the combination of Rails and AngularJS, but we didn't like that we had to write a lot of stuff twice (ie. Rails routes & Angular routes, Rails controllers & Angular controllers). Therefore we have written quite some glue code to automatically generate AngularJS code from our Rails code. I have been wanting to make a full write-up of all our experience in combining Angular & Rails for a while now, but didn't get to it yet. I did write-up a quick and dirty way to automatically generate Angular Resources from you Rails controllers, though. (http://10kb.nl/blog/automatically-generate-angular-resources...)
And, if anyone has any questions about combining Rails & Angular feel free to shoot me an e-mail.