Check out this gallery of Apple ads from 1977 to the present. At first, it's good, campy fun. Then, it turns into a house of horrors. You can actually tell from the ads precisely when Steve Jobs was run off the reservation, and when he returned. (That co-op ad with Quark? Eeesh.)
Taken together, the collection echoes a theme we always hammer on here – your audience controls the conversation, not you. The lecture-y, long-copy* ads make you want to claw your own eyes out. The ads that hint at what you could do if you had a Mac do not. In fact, they're still insanely great.
There's a cool exhibit of the technology itself as well.
*Long-copy ads are not automatically bad. But when they are…/shudder.