I never really got into the first one for some reason, but I've played a few online matches of the new game in beta and it definately lives up to the StarCrack nick name.
I've only played 1 vs 1 games so far.
It's funny, I got an e-mail from Blizzard saying: "Congratulations! This is an additional invitation to the beta test for Blizzard Entertainment’s StarCraft® II: Wings of Liberty™ for you to share with a friend!", despite the fact I certainly didn't have a beta key to begin with.
Anyone else had a chance to play? Excited for the release at the end of July?