1) Zero paternal leave. This may lead to subconscious hiring bias for men b/c you know they can't take paid leave. I'm surprised the S-team permits this, but I think they're all male anyway.
2) No free lunch ever. Facebook and Google both have them. Microsoft has free snacks I think. Several Seattle companies have catering on Friday. The Amazon Silicon Valley office has them only because there would be a revolt if they didn't. (Oh sorry, there's rumor of free ramen noodles on some floor in Blackfoot maybe)
3) On-call for all devs.
I think reddit had a thread series last year showing off what interns got at Microsoft, Google, etc. At Amazon, interns get to keep their backpack when they leave.