The mailman featured in the Heroes teaser below must have superpowers; for one thing, he’s running instead of ambling at a leisurely pace. Also, says the postman, he can make powerful sounds with his voice (he bears the unlikely name of Echo De Mille) and may even have killed someone. Beyond that, I’m not really sure what’s going on in this preview for “Going Postal” (heh heh), the summer webisode series from NBC that premieres on July 14. I’m also not sure how it ties into the “Villains” storyline of season 3, debuting this fall on NBC, except for the enigmatic appearance of Mrs. Petrelli in the clip. Still, I’m hooked. You?