I charge my Adelphia cable bill to my US Airways Visa each month by calling in or stopping by the local office...they accept V, MC, and Discover only.
It's surprising that DirecTV and Dish Network haven't had any substantial bonus mile offers out there with any of the airlines. There's so much competition in the cable and satellite biz these days (especially with so many people getting HDTV) that a miles promo would seem logical to sign up new customers.