I was introduced to UNIX in 1993, Linux in 1995's Summmer, and have lost count how many X Windows desktops or windows managers have come and gone in 32 years.

What's been your favorite?

I wasted too much time tweaking Enlightenment. I remember that was fun but I don't really remember much about actually using it.

OS/2's Workplace Shell feels like the biggest lost opportunity (and has nothing to do with UNIXy stuff). I really liked Rexx and the SOM stuff felt cleaner than what became COM in Windows.