I don't have any stories of contact with the great man myself, but wargame buddy Pat did tell me how in pre-internet days he and a friend had once rung him from Canada at a tense moment to resolve a critical rules issue. Apparently Mr. Berg was very gracious about being woken up in the middle of the night. Whether he was able to provide a satisfactory answer to Pat's rules query is harder to say!
I tell you what though, being the guy who designed Pax Romana, Rise of the Roman Republic, Terrible Swift Sword, Successors, Great Battles of Alexander and many more is a pretty decent legacy.
Cast a cold eye
On life, on death.
Horseman, pass by!
* IMHO, obviously.