Bumi Parahyangan promotional poster and brochure by Rittsu, at Behance. Triangles don& seem to be popular shapes to use in graphic design, but Rittsu executes them well here. Notice the subtle arrows pointing right to persuade the viewer to read on.
A web commercial for a book called "Geo/Graphics: Simple Form Graphics in Print and Motion" which is published by Hong Kong based publisher Victionary. The goal was to bring the book cover to life by animating various colourful geometric shapes.