Live blog: Opening Ceremony kicks off in London

(Photo: Hannah Johnston / Getty Images)

The 2012 Olympics opening ceremony began in London at 4 p.m. ET, and more than 60,000 spectators and athletes are tweeting their reactions. We will live-blog the event as it happens, along with your reactions when it airs at 7:30 p.m. ET on NBC.

Consider yourself warned: This post will contain spoilers!