Not to many, but
I started (out of college) with 3 weeks of vacation, plus I can roll over like 2 weeks, so not to bad.
Lots of free lunch meetings where I get paid to work and eat at the same time. I get out at 4 on those days instead of 5. I used to be able to go weeks without ever paying for lunch, but those days are over and now it is more like 2-4 times/month 
Free rather large gym in the building.
I can flex my time pretty much whenever I want.
I've also gotten a lot of free outdated PC equipment. CRTs, cases, stuff like that)








