Iphone and Live TV
Other AT&T products offer MobiTV that offers live broadcasts of TV programs. They have been offering that for quite a while and it works great on EDGE (which is TRULY nationwide) and even better on 3G.
And HSUPA would not help TV. The biggest upgrade there would be UPLOAD speeds.
BTW, Sprint and VZ do not have theirs deployed on a nationwide scale either. Their nationwide network is much slower overall than EDGE. Major metro areas only with theirs as well (yes they do have more than AT&T but it is not nationwide, just to clarify).
I liked it better than the new CV.
Most of the Mobi features are pretty cool. Mobiradio for instance makes any phone a music player.