6d6 has quickly become my go-to game (or one of my top go-to games anyway) over the last 5 months. I found it very easy to read and grok between the format and writing. It's got a nice blend of old- and new-school "-isms", and I think presents a very mature outlook on some things like game leadership, group dynamics, and open book gaming.
The use of "Potential" to drive PC actions as an "in character" throttle vs more out of character solutions (like fate points or such) seems innovative, and is working very well for my play groups. It feels like it really builds characterization as players use their potential to conduct actions, and determine how to mix and apply their PC's Advantages to solve any given challenge.
I think this is a real gem of a game system, with a lot of value, and highly recommend checking it out. The rules and materials can be read and previewed for free at the publisher's website.
[5 of 5 Stars!]