From the Mike Mornard question thread over on ODD74, I saw this:
"It was relaxed until it was "GAME ON," then it was VERY tense! Gary took EVERYTHING in character, so if you were running your mouth, your characters were standing in the middle of a monster-laden dungeon running their mouths!"
That's from this post: http://odd74.proboards.com/post/131927/thread
I'm sure I could play this way these days. Sounds intense and fun but not terribly relaxing!