Google I/O

An Introduction to Android
http://sites.google.com/site/io/an-introduction-to-android

Anatomy & Physiology of an Android
http://sites.google.com/site/io/anatomy--physiology-of-an-android

Dalvik VM Internals
http://sites.google.com/site/io/dalvik-vm-internals

Inside the Android Application Framework
http://sites.google.com/site/io/inside-the-android-application-framework

Building an Android Application 101
http://sites.google.com/site/io/building-an-android-application

YouTube Android Developers
http://www.youtube.com/user/androiddevelopers