Some time ago I wrote about how my shiny new MacBookPro crashes whenever I plug in an external monitor. Turns out, Apple displays don't make it crash.
I wrote a bug about it, and Apple responded well. They gave me a tool to use to record information about the monitor.
Interestingly, I no longer have privileges to read or append to the bug I originated, and neither does my friend at Apple. I finally wrote a new bug referencing the old one to try to get some info, but it's been four months (and a few updates) without a fix.
Also, I'm on my third MBP since then, and it still crashes, so I'm fairly certain it wasn't a hardware defect (but it could be a hardware design flaw).