For really hard-core Java lovers

Jeremy Manson has placed the video of the Java Puzzlers talk that he and Josh Bloch gave at this year's Google I/O on his blog.

The puzzlers are clear, the presentation is entertaining, and no matter how much you already know about Java, you'll learn something new.

My favorite part:

Never ignore a compiler warning, even though it is incomprehensible.

Words to live by, indeed.