Remember the first puppy you ever got? The one that jumped and bounded and was happy to see you no matter what? That's how we see Ashton Kutcher -- no matter how many TV shows he stars on or tweets he sends or cougars he dates. He's a rare breed: probably the world's only fashion model who can also play the perfect goofus. And even when he's up to no good, we still love the rascal. So we're honoring his 37th birthday on Feb. 7 with a recap of his highs and lows, from the cornfields of Iowa to the big and small screens.