I was contacted by a recruiter who suggested several different positions before this one in their HR department. Apparently, they were looking for someone with more experience for most of their other positions (I am a recent college grad). The first portion of the interview process was a written questionnaire asking typical questions like "Describe your biggest challenge" and "Describe a time where you used common sense." My written portion of the interview was enough for Bridgewater to schedule a phone interview.
The phone interview process was pretty long (45 minutes), taped, and basically consisted of my interviewer probing me on aspects of my personality. She asked me three times what my biggest weakness was. Although the actual questions she asked weren't too bizarre, the prying, drawn-out nature of the interview was very strange. Also, she stressed the company culture and babbled a lot about "seeking complete truth" and "determining what is reality" in the workplace. Hearing her talk about it made Bridgewater's company culture seem more like a cult.
Ultimately, they weren't interested because I didn't demonstrate enough interest in HR.