Walter is one of that rare breed of people who, even if they annoy you or really piss you off, you end up felling bad about it.
He is insufferably polite.
He is also a bit of a nit picker. However, even when he is doing so, his irony is never bitter and his good humor shines through. He usually disagrees with me and has even got to me a few times with his responses. However, try as I might, I can't find a way to stay sore at him.
Perhaps I like him!