I installed BeOS on my PowerPC Macintosh in the days right around the NeXT acquisition. It was a spiffy OS, at least for a teen nerd without much knowledge beyond Mac OS.
I actually used beos as a daily driver for a few months. This was maybe around 2000 or 2001. WinME crashed a lot for me and I couldn’t make linux detect my winmodem. Installed beos and everything was great. Dual booted with windows 98 when I wanted to play StarCraft.
Moved to Linux soon after but I will always remember those great days.