MobiTV is complete junk. I suggest anybody interested just take a look a the abysmal reviews. $10 a month is horrible considering the laughable few channels you get. The interface is *HORRIBLE* and does not conform to ANY iphone UI standards at all.
Slingbox is better but ridiculously overpriced for what it does.
My best suggestion is for you to take an old, old computer, put a cheap tv tuner in it and run Orb. I put an old laptop in there running Orb and it barely draws 5w. Oh yeah, it cost me a grand total of $5 to setup. Not only can it stream Live TV, but also webcams and ALL media stored on your network.