Thanks everyone. More than anything I just wanted to know if this was common. Whew - it is. And just like so many of the other "joys" that cone along w/quitting, I'm relieved to know that this too shall pass - pun intended.
Special thanks to MDW for the link. I've been experiencing #2 (the urge to murder) all day today. Completely out of the blue everyone in my life is driving me crazy today. They aren't doing anything in particular - just existing. I'm past the detox phase and haven't experienced this feeling until today. Interesting.