Tengen fuseki
Davou I was playing rengo with a 7d once, He was on my side, and Before we started I asked him If I may open on the tengen. he said it was fine, and I did.
My idea about opening on the tengen was to have a stone twords which to run my weak groups, and preserve connectivity through the game. But what he did was strange, he played a fuseki that completely emphasized the tengen.
assuming white takes star points;
Thats the opening. black disregards the corners in favor of producing a strong base from which to create large scale fights all over the board.
Now, the black stones are off the star points, but I think that in this position they should be directly on the star points, but in the game I had originally played, they were off center by one space towards a 3-4 point that white had made.
Here is the last 10 moves of a game I played against my teacher (Burzos 4d) using this fuseki. Obviously he was going easy on me, but I think this was still a fair demonstration of the adaptablity of this fuseki.
In this case fighting white was not a great idea. he had superior sense of shape, counting, style, and he was by and far more awesome than me, but I think that the strong fighting power I got from this fuseki discouraged his brutally attacking me left and right.