This may be a strange question, but here goes:
Yesterday, I was on a DL 737 from SLC-IAH, and as we started the takeoff roll, the cockpit door flew open, like it wasn't latched properly.
It was great in that I got to see takeoff and climbout, and no one seemed too terribly concerned with it, but it did prompt this question:
Are cockpit doors or cockpit door latches MEL items? I've been on little puddlejumpers where you can see out, but I didn't know if other rules applied to the bigger boys...