1) Quarterly objectives that are only partially tied to company performance. If I meet my objectives but the company doesn't I still get 75% of my bonus, which is 3.75% of my salary per quarter (assuming the whole thing pays out). And the company portion of the bonus has been there for the last 6+ years running without interruption, so they set reasonable goals for themselves too.
2) If you work on something big, or accomplish something significant, additional other bonuses. I've been there since last July and have gotten two of these, ranging between 4% and 10% of my base salary. The 10% bonus takes 4 years to fully vest, but that is reasonable.
3) Workout facility onsite.
4) I have an office, not a cubicle. You have no idea what this means to me, especially since I am usually writing documents for 1/3rd of my time (I build solutions, test them, and write-up my test results and reference architectures) and like my privacy.
5) So long as I am not seeing customers, there is pretty much no dress code (within reason, I wore shorts and a t-shirt from ~April till just last week). This is wonderful because honestly, unless we have clients coming in to meet with my team (rare, since we aren't in sales) I don't need to be dressed up at all.
6) Solid benefits. This means reasonable deductibles that won't kill me if someone has ongoing health issues/medications that are outside of their control. This is huge as well because crappy benefits can cost my family $3K-5K/year, and I take that stuff into account when looking at the base salary of an offer.
7) My boss feels that if you have to work more than 40 hours a week on an ongoing basis, he is likely not doing his job correctly. He works with you to set reasonable quarterly objectives, which he of course fully expects you to meet.
8) Training. We work with unreleased/just released stuff all the time (and write about it), so this is critical.
Yes I am paid well, but items 3-8 on this list are enough to give me serious pause before even entertaining another job offer. I could care less about cake days, or massages. Workout facilities, an office, and a lax dress code help keep the stress down. Good pay and benefits means that I'm not worrying about money, which is important. I don't need to drive a Ferrari, but my family vacations and the occasional hobby are important to me.