Happy 40th birthday to the one and only Frankie Muniz! Can you believe it? Our favorite child actor from "Malcolm in the Middle" is now all grown up and officially in their fabulous forties. Where did the time go? Did you have a secret time machine stashed somewhere? But seriously, you have accomplished so much in your 40 years on this planet. From making us laugh as Malcolm to dancing up a storm on "Dancing with the Stars," you have always kept us entertained. You may have even inspired a few of us to take up go-karting as a serious hobby. But most importantly, you have remained humble and kind throughout your career. That's not an easy feat in Hollywood. So cheers to you, Frankie, and to many more years of success, laughter, and go-karting adventures. Happy birthday, my friend!