I think London's lighting is probably my favorite of all time. LOGOC got everything right with the whole sequence, the music, and the progression. I love Caliban's Dream, probably my favorite original track composed for the Olympics. Sir Redgrave's entrance with 500 park builders cheering as the honor guard was brilliant. I wasn't too sure about the youths lighting the cauldron but London's motto IS "Inspire a Generation". The image of 200+ previous British medalists looking upon them waving and blessing the youth, the hugging embrace from the legends that nominated them, all with that hauntingly beautiful music gave me goosebumps.
It's still very unfortunate that the cauldron cannot be seen outside of the stadium and had to be turned off to move it to another location.