David Letterman kisses Amy Poehler while talking about Joe Biden

On last night's "Late Show," "Parks and Recreation" star Amy Poehler told host David Letterman what it was like for her character, Leslie Knope, to meet vice president Joe Biden. Biden, who performed a cameo on the show, is Leslie Knope's biggest crush (Knope's ideal man would have "the brains of George Clooney and the body of Joe Biden," says Poehler). At the end of her meeting with Biden, "just for the heck of it," Poehler "went in for a kiss." And then Letterman went for it, too.