Semiregular Tessellations(ain't that a mouthful)

I suggested to bryk to make using one of these a requirement in a future showdown. We'll see if that happens.
But incase you like the idea of using these here are two links.
small pictures and explainations
site with grids you can print out plus demiregular grids and some other stuff.

My favorites of the 8 semi-regs are the one with dodecagons and the funky one with triangles and squares