I gotta say that B.net is really the best online game management system I've ever seen, it's simple and fast to get started, my only single beef with it is the irritating password rules (If I wanna use a statistically poor password, isn't that my risk, not yours?) and the lack of LAN support.
The story really is great, but as many know, it does absolutely screw-all to prepare for the MP or even skirmish. In the singleplayer atleast I loved the return of all the classic SC1 units which I thought I'de miss, units like Wraiths and Goliaths.
Cutscenes, like those on the Hyperion and so on I'de have prefered to see pre-rendered in higher resolutions, but there still not at all bad, in game graphics is the also the perfect balance of being shiny-shiny and retaining preformance, if only more games can follow that line of thought.