However, the real beauty of VMS wasn't so much it's architecture (though that had a lot of good points) but the incredible quality of DEC's implementation. Bugs were for the competition.
While I used VMS extensively and liked it in many ways, this is just silly.
When VMS 4.0 was released (the first version to include DCL command line editing), we had some unexplained crashes in our cluster. We eventually tracked it down to a bug in the command line editor (yes, it ran at least partially in kernel space). We had a local "competition" to see who could find the shortest number of keystrokes that would crash the system. The winner: 4. Yes, you could crash VMS 4.0 by getting an unprivileged command prompt and typing 4 characters (didn't even need to hit RETURN).
The bug was fixed in 4.1.