I had a user drop a Klix Hot Chocolate into her Mac keyboard. Luckily she had the presence of mind to yank the cable. The engineer turned up and gave it a thorough cleaning and it worked again. Hardy, those original Mac keyboards on the Mac Plus.
20 years ago? Baby steps. I'm coming up to 39 years in computing. 20 years ago, I was doing OLAP cubes for financial reporting and VB development for a car leasing website, developing the database (SQL Server) and middleware between the database, the IBM mainframe (with MQ Series taking care of the requests) and the ASP pages on the website. It was sold to the client as a 6 week project, I joined the project after 18 months, helping with the writing of the specs and doing coding!