It is definitely interesting to see the representation of national styles when the games are in a certain country. Tokyo 1964 and Sapporo 1972 both incorporate the rising sun from the Japanese flag while both Innsbruck games (1964 and 1976) have nearly identical logos with the exception of the colored rings vs. black rings.
Out of all of the logos, my favorites are by far Tokyo 1964, Barcelona 1992, and Torino 2006.
I'm glad that we don't have to wait four years for the Olympics anymore since they alternate winter and summer every two years now. I'm not sure if that's a statement about our instant gratification society, or if it was just intended to keep the world's attention on a more regular basis, but either way, I like it and with less than two weeks left in the current games, we're already too close to the end!