Terminator 3 sucked because it was essentially the exact same story as T2 but with a much worse script, lower budget, lack of direction, different John Connor, no Sarah Connor. A lot of people were expecting the whole thing to take place in the dark Skynet future. That, at least, would have made it different.
Here's hoping that along with a new Matrix, we never see a Terminator sequel.
I've caught a few bits of a few episodes of the TV show and while I can't comment on the series as a whole, I can say what I saw was far better than Terminator 3.
This season of Heroes was complete trash. In some ways I think it may have been saved by the writer's strike. Let's hope they don't hire back any of the same writers who worked on it in the fall. But it's a shame a number of the quality new shows aren't coming back until late this year (Life, Pushing Daisies among others)