redis-objects is built on top of redis-rb and creates objects that are backed by redis, with operations like push, pop, etc. cleanly mapped.
In other words, it's a more ruby-like API.
I recommend reading the github README for redis-objects, it goes into a lot of depth.
Thanks for the heads up.
Edit: updated.
I started using Redis for a project with Node, and I loved the node_redis library because it's non-blocking :-)
A couple hundred lines of ObjC got a generic Redis client and a special-purpose blpop client working for my Cocoa apps (I keep libevent in a thread there).