A while back, motion graphics and multimedia artist Serge Berig showed how he created the Google style type and animation using the Ouroboros preset in After Effects.
Taking that one step farther, Serge offers a free download to the Alphabet animated font. The Animated font is something that he created based off of the open source google font called Roboto.
You can download video clips for each type character that have alpha channels, so you can easily drop them into your own work. Serge also makes the After Effects project file available for download, for free.