Mine crashes a lot. Usually after I send it to sleep when I go home. Next time when I wake it up, it starts up from crashed state. It might have something to do with some app I installed but I didn't spend time to figure that out yet.
I think I went through two MBPr 15" machines before I got one that didn't have the problem. I still think it's possible some software I had was triggering it initially, but once it happened a few times, even a clean install with nothing on it could trigger it. Was very frustrating.
I wonder if the most recent VMWare version would help.
"I managed to fix this by going to the Virtual Machine Settings, clicking Advanced, and then checking the "Pass power status to VM" checkbox."
Haven't tested extensively, but I haven't had a crash in the past day.