Videos I recommend to (Java) Programmers

For better Java programming

Google I/O 2008 - Effective Java Reloaded - Joshua Bloch

Effective Java - Still Effective After All These Years - Joshua Bloch

For better API / language design

Growing a Language, by Guy Steele

How To Design A Good API and Why it Matters - Joshua Bloch

Evolving the Java Language - Neal Gafter

http://www.infoq.com/presentations/neal-gafter-evolving-java    

Advanced Topics In Programming Languages: Closures For Java - Neal Gafter