mattie d.j.ing, i can't wait. it's going to be fun. >> reporter: just yesterday, they were featured on cbs "sunday morning." >> woodruff: don't do it for fame. i do it because i love it. and i do it for the money. >> for the money. i do it because i love it. you get rich so far. not yet. >> reporter: they are also making a documentary about their journey. tim forester is leading that project. >> there are so many stories we >> we that as big culmination of this thing, movie stand out on own, but to see the time the effort, patients involved making this movie, that's the real story. >> reporter: on this halloween, updating a feel good zombie story, i'm mike melia for the pbs newshour. >> woodruff: sam and mattie have a big future, we want to be there to cover the whole thing. finally, we stay in the halloween spirit for our newshour shares, something that caught our eye that we thought would be of interest to you, too. the vampire bat is hardly the agent-of-evil its association with dracula would suggest. we asked