At this point my sister calls asking me about the details that she's been hearing from the NASA commentators. She's watching NASA TV in her lab in Tucson. She offers to prop her phone in front of the computer, and I talk to our bus driver Earl and ask if I can commandeer the PA system. I hook in my cell phone to the mic, we turn off the infomercials, and we drive back to Kennedy while cheering after each event (those we can understand, at least -- this signal is being transmitted from launch control Florida -> NASA TV in Houston -> satellite -> ISP -> streaming video -> Internet -> Heather's lab in Tucson -> phone network -> cell phone towers -> bus back in Florida). We pull up just as the spacecraft has separated and is set on its way, coasting to Pluto.
Check out the mission status page at spaceflightnow.com for play-by-play details of the launch and separation.
And also check out the Where is New Horizons Now? page at APL for an up-to-the-second mission trajectory.