Discovery Channel Takes a Turn for the Simpler
I'd call it a serviceable redesign, mainly because I can't think of much to make fun of, and I had trouble even remembering what the old one looked like. But now that I've revisited the old one, I'm really glad it's gone.
Other somewhat interesting logo changes:
o That wanky Office of Gov't Commerce logo (UK)
o Kodak (very web two-dot-oh)
o Red Roof Inn (not quite red)
o xerox: no-caps, warm cuddly typeface, complete with beach ball