MacPaint and MacWrite First Public Demo (1984) [video]

Article note: This is a fun watch. Most of the original Mac team on stage, talking in public. There's a link to a longer and slightly higher quality copy in the comments. Especially interesting to watch in layered historical context, since you have the modern stuff that makes what they're showing mundane and thus influential, you can look at the NLS and Xerox demos from the preceding decade-and-change that do all the tricks and more but not in financial reach of consumers, and we can look retrospectively at the career arcs of all the people involved.