Does Netflix Know Javascript?

The title is "Does Netflix Know Javascript?" (i.e. implying they don't), then he writes:

"Overall, I have to give the netflix site an A- in the way they handle their javascript/css. The do almost everything right, and are strongly optimized. It’s a site done well, much better then 90% of the websites out there, even large well known ones. My hats off to the developers."

...

jeez i wish someone could comb through my site with this much detail for free too.