A Quilt and A Prayer ~ a beautiful block by Edyta Sitar, which she calls it her "Eldon block" from Edyta Sitar's quilting class. I love the dimension this brings and how the colors just forms it's shape. NICE!
Best list of log cabin variations I've ever seen. Great tutorial too. Any shape with straight sides can be the base of a log cabin block. Consider a rectangle, pentagon, hexagon or even octagon log cabin.