What is your favorite redesign of a logo? Your least favorite?

Pretty much explains itself. Oh, and tell us why!

My favorites are probably the new Mountain Dew logos, because they fit with the obnoxious look of the drink. I also love the redesigned Doritos logo, because it kept a lot of what was fun about the original while taking a more mature look overall.

My least favorite is probably the new Pepsi logo. It just looks to weird for me, personally. Also, the recent redesign of the Google Chrome logo just sucks.