TheNewBoston: http://www.youtube.com/watch?v=SUOWNXGRc6g&list=PL023BC9408BAFEC0C
Bucky has a YouTube Channel called TheNewBoston. He has made many tutorials on Android Development starting at the beginner level. They are detailed and easy-to-follow, and I used them when I first started Android programming. There's over 200 full-length video walkthroughs.
Tutorials By Android: http://developer.android.com/training
Android's website contains very detailed walkthroughs you can read at your own pace. Good for intermediate-level developers who want to dive in and start coding.
MyBringBack Video Tutorials: http://www.youtube.com/watch?v=CxPh1tgiK2g
Travis (MyBringBack) has created a detailed tutorial series. These are thorough and very good for beginners.
Code by Example: http://developer.android.com/tools/samples/index.html
Android has provided sample projects that you can download, and dissect/take apart. This is a good way to see how others code and how everything comes together.
For intermediate-advanced programmers:
Once you've gone through the tutorials above, or if you are already familiar with Java, set up your IDE to connect with http://github/ . There you will find numerous sample and live projects along with developments in progress. You can access other people's project to use or to develop collaboratively with others. Here are some quick resource links for projects hosted on GitHub:
https://plus.google.com/communities/100609058582053363304
http://www.quora.com/Android-Development/Which-are-the-best-Android-projects-to-follow-on-GitHub#
Here are some other resources in case you still crave more information:
http://www.slideshare.net/joemarieamparo/android-development-for-beginners-with-sample-project-day-1
http://www.codeproject.com/Articles/102065/Android-A-beginner-s-guide
http://www.datasprings.com/resources/articles-information/android-sdk-example-application-sample-code
Hope this helps and happy coding!