Is Jimmy Fallon a fan of The Wonder Years? Although the new dad calls Danica McKellar's '90s alter ego "the coolest girl on TV ever," he and wife Nancy Juvonen – who welcomed their 3-week-old daughter via surrogate last month – actually picked a name nodding to New Hampshire's Lake Winnipesaukee, where the couple vacationed together every summer and got engaged. "You overthink names – you don't want a name that's been done, but then you don't want something so weird people are like, 'What?!' Winnipesaukee's a little long," the late-night talker told Today. "Also she's a 'win' for us."