Who Else Listens to National Public Radio?

Have you seen the branding campaign for KERA-FM that plays up the station’s well-rounded listeners? On billboards and inside DART trains (and probably some other outlets I haven’t spotted yet), these ads simply say that “[ing verb] [plural noun] listen to NPR.” Off the top of my head, I can recall seeing ones that mentioned “sudoku-playing linebackers,” “skydiving librarians,” and “opera-singing truck drivers.” I invite you to channel your inner Mad Man and come up with some more theoretical NPR listeners in the comments.