I've Arnold briefly.
I was in the Fossil store at Easton, a mall in Columbus, when he came in with his family one night after the Arnold Classic this past year had just ended. His bodyguards didn't let anyone enter or leave the store until he was done shopping. He was tough to understand, but was very polite.
On a related note, it's strange seeing Arnold in person. He's extremely short, like up to the middle of my chest, but you then realize that he is the single broadest shouldered, most muscular person you've ever seen. His shoulders were roughly twice as wide as mine, and I am not a small man.