Happy Birthday, Roger Hargreaves. The acclaimed children's book author would have turned 76 today. In true Google fashion, the search engine saluted Hargreaves with a homepage homage featuring some of his iconic characters.Roger Hargreaves may be best known for his Mr. Men and Little Miss books about smiling, colorful cartoons. Google really went whole hog for today's celebration, reviving Mr. Messy, Little Miss Chatterbox, Mr. Tickle, and tons of other doodled dudes. There are 16 Roger Hargreaves Google doodles in all. Through careful screen shots and furious page refreshes, we present you with each and every one. Enjoy!