Scholz and Bieber have explored these folds in depth.
I saw this particular pattern on flickr and really liked it.
If you're feeling creative, you can make yourself crazy deciding which direction the triangles should go.
You can also go nuts and do this with small triangles. That would be a hell of a lot of triangles to work. But I've done it and so have many others.
You can also fold over the ednges of the triangles in different patterns for more variations on the design. They can be inverted too.