I love this post from the often provocatove Kathy Sierra called, Be Provocative. She makes a quick and powerful visual case for WHY to be provocative and then spends the bulk of the post on HOW.
Here is one snippet, but go read the whole thing:
Humans often find puzzles and even questions irresistible. Just try to walk by a TV playing a quiz show and not think about the answer to the question you heard walking by. How many times have you watched to the end of a movie you didn’t particularly like, just because you had to find out how the story ends? Our legacy brains love curiosity because it usually means more learning. (FYI – my horse finds orange traffic cones irresistible)
Just a side note – I use orange traffic cones to keep my huge dog from laying under the recliner when I recline (I can’t get out when she does that!).