Anything from Cliff Click is quite good. This guy has a very deep understanding of compilers, virtual-machines, CPUs, and their interactions.
A JVM does that? http://www.youtube.com/watch?v=uL2D3qzHtqY
Java on a 1000 Cores http://www.youtube.com/watch?v=5uljtqyBLxI
http://www.youtube.com/watch?v=WYXgtXWejRM