I must be one of the few that watched it. Though after the initial keynote I mostly just watched the case modding stream (Mod24).
The lighting, liquids and turf effect demos blew my mind!
IMO, the GTX980 really isn't worth it. the 256 memory BUS is kind of a handicap at 4K resolutions. I'm sure though if they do an 8GB 980ti or something it will be amazing.
For most gamers, the GTX970 will be the one to get. It's MSRP of $320 ($230 USD less than the 980) and the fact that it can directly compete with much more expensive cards (980, 780ti, Titan, R290X etc) at 1080p make it an amazing value. I just got mine a couple days ago and so far it's been amazing.
Gigabyte P67A-UD4-B3, Intel Core i7 2600K, 16GB Corsair DDR3, EVGA GTX 970 SC, Win7 Pro 64-bit SP1, Primary monitor @ 1920x1080, secondary monitor @ 1024x1280