I remember seeing Mesa Spreadsheet back in '93 on NeXTSTEP. It was running a bar chart getting fed from live data and the bars were moving up and down as the numbers came in. It was very cool. If you want to know how it all started, check out the Steve Jobs Demo of NeXTSTEP 3.0 from '92
Just FYI, Jaguar won't install on my iBook (below). I was going to dual boot between Jaguar on my external drive and Panther on the internal HDD purely for novelty and comparison reasons, but no can do - apparently the boot ROM has been upgraded to the stage where all new Macs won't run on anything lower than the OS it shipped with - in my case 10.3.4.