I've seen heaps of Brett Hart's matches, as he came along in a period where I enjoyed Wrestling
Personally it was his Wrestling ability that stood out for me. He was awesome - something else in fact. He was better than Angle, better than HBK, better than Benoit (I still think Benoits sharpshooter isn't far off what Hart's was, see this weeks sd! for reference) and better than most other recent technicians you could think of. The best thing is that he was definitely charismatic to go with it.
I agree on the Goldberg front. I think TNA is definitely a possibly, perhaps sooner rather than later. It'd be awesome seeing him feud with someone like Abyss or Samoan Joe. I did read the other day that the WWE were in "serious" talks with Goldberg and there was a real possibilty of bringing him back to the WWE. This popped up just after the deal with Brock Lesnar (another who may be in TNA soon) seemingly fell through.
It seemed to me that a lot of the time people were unaware of his ability on the mic, but it really was very good. Especially when he first left WWF and went to WCW and go stuck into the WWF.