Way back in the early days of computing, the first computer I had at college was a Mac 128k. It was eventually upgraded to 512k, but I managed to sell it and get a Mac Plus (which I still have). The decision to get that Mac Plus was significantly influenced by my having seen Hypercard.
I worked for Cornell’s campus store computer department, and was a member of the campus Mac users group. I recall writing an article for the campus newsletter about how to use Hypercard on one floppy (for those of us who didn’t have 2 drives.) This required lots of disk swapping, but was still doable. I was a huge Hypercard fan, and learned lots of introductory programming and scripting concepts via Hypercard.
When I graduated college and applied for my first job, at BBDO, I sent them my resume on a Floppy Disk using a Hypercard stack that showed my experience, jobs, and even a page with a picture of Cornell where the bell tower sound would play if you clicked it. I got the job, and that same stack helped me when I applied to NYU’s ITP program. Though I do recall Red Burns taking me down several notches for inconsistent interface design, difficult navigation, and more, it did get me in.
At JP Morgan in 1992 or 93, there was a need to roll out some custom software for 360 peer review to every mac user-over 3000 around the world. I ended up developing a Hypercard stack that did the majority of the work (with some custom code from Microsoft to communicate with a mail server), and I did it in my “spare time” with my tech friends at the bank doing the testing. This ended up getting me an advancement and helping shape my future career.
My friend Christopher Allen mentioned that  this weekend is the 25th Anniversary of Hypercard, so I  wanted to put down this small reminiscence and thank Bill Atkinson and the team at Apple that made Hypercard such an amazing product.
Elsewhere: David Weinberger has a great take on Hypercard@25 (and h/t for the picture).