Some of you might remember when a 3mb flash animation could pack in some 5 minutes of animation, with the more advanced ones even having chapter/scene selectors, which could also include clickable easter eggs and other kinds of interactions during the scenes.
Even in 2004 using adobe flash to control some industrial system was an ugly hacks
When the developer cares way more design than function
I saw some ultra fancy quotation tool that was simply a PDF with JavaScript, and it would just open adobe reader in full screen. Yes, you made it so fancy because you could use complex vectors in the background and multiple pages, and by doing this the fancy UI part was done way faster, but good luck maintaining that mess over the years