And before Macwrite, or Macintosh computers existed, there was Xerox PARC and their GUI-based WYSIWYG editor called "Bravo", which Steve Jobs no doubt would have seen when he visited PARC.
I noticed Alan Kay himself in the comments, indicating about the only thing in the scene that is accurate is the guy playing Steve Jobs (Noah Wyle) looks/sounds similar to the real Jobs. Everything else was pure Hollywood fluff.
