I really like the poster above, the black on yellow print immediately catches your attention because of the contrast in the sharpness of the yellow and the solidness of the black. The way its been layed out has been done so that your eyes flow down each line whilst at the same time the use of 6 typefaces doesn't over complicate the poster but instead enhances it visually.
Again the key element to the poster above being very visually intriguing is the colours and the layout of the type. Centered type that's sans serif is simplistic and crisp reflecting on the meaning behind the quote that's being used.