Pottery Barn featured a very similar graphic in one of their nursery photos. Squeeeee! It is so darling!
Of course we can't forget chevrons! They are so popular that Kathy has an entire Pinterest board (as of today 56 pins worth) of chevron walls! This is my personal fave (a little more non-traditional, almost craftsman-style). If you love it, she has a great tutorial on exactly how she did it.