Frank Gorshin was a comedian and impressionist (quite a good one) even before his "Riddler" days.
Speaking of death :-( The last post reminded me that, to this day, my parents (well, now just my father) STILL get the World Book Encyclopedia year book -- every year since 1966. Why does he still get it? We get together, usually in the summer, and read the "Deaths of Notable Persons" section, which we call "Famous Dead People"! Now this may sound really weird (most likely because it is), but we always discover people who died the past year that we didn't know (and/or had forgotten) had died. There are also always some folks listed there whose claim to fame is esoteric, bizarre, or funny. It's a family bonding experience (believe it or not).
Frank'll be in the next one...