True.
I dabbled in some of them during some periods when I took a break from work. And also some, during work, in my free time at home.
Pike, ElastiC (not a typo), Icon, Rebol (and later Red), Forth, Lisp, and a few others that I don't remember now.
Not all of those are from the same period, either.
Heck, I can even include Python and Ruby in the list, because I started using them (at different times, with Python being first) much before they became popular.