Wow the time sure flies!
(Video in MPEG-1/Audio MPEG-2 care of JSMpeg).
I know it's terrible quality but finding video from these old Apple events seems to have been recorded on VHS, and then re-recorded using the 'best' video capture technology for under $100 of the era leading to some really poor quality. Such is the internet I guess.
I didn't buy a first generation but I did have a 2nd generation 333Mhz green iMac to run OS X Server 1.0 ... Who wasn't excited for the prospects of the next millenium?