Short reply? Rural "broadband" and streaming media don't really go well together without throwing huge wads of money away. Unfortunate but true. Exede and other LEO broadband satellites are certainly a move in the right direction with speed, but the data caps and latency for the money are still a bit painful to swallow, and throwing extra speed at most people who don't really need more speed so much as data throughput for the money in rural areas is a bit painful to see.
If you're anywhere near any halfway decent cell phone towers from AT&T, Sprint, T-Mobile or Verizon, the prices per month and speeds available kinda wash out, and setup can be equal or less as well if you've a propensity for going under contract. (Yes, I'm aware that's quite a statement from a guy who urges everyone not to tangle directly with the big four MNOs.) If you've got good Sprint coverage in your area, of the big four, they'd be the most cost effective... especially if you're in a 4G area. Look at Virgin Mobile for their Broadband2Go options. You still won't really be able to waste much bandwidth streaming entertainment, but it's just entertainment. Use Netflix's DVD mailers instead as Desrever suggested or the local Redbox... or decide exactly how much money you really want to spend per month on keeping that living room box illuminated.