Touched by an Angel – example here, at about 1:45: http://www.youtube.com/watch?v=l0Tdp99UEXg – at least once an episode the golden backlight would come on and one of the central recurring cast would reveal themselves to be an angel to the troubled mortals travelling through the week's episode.

I am deeply pleased you like the last panel. :) There's no way Bill was an ordinary mortal human being – he raises the bar too high!