I am he, and have been using tcl for some time, mainly in the context of the Emu system [L1 ] which is among many speech related applications that have chosen Tcl as an extension language.
If you really want to know more about me, look here:
http://www.shlrc.mq.edu.au/~steve/
which includes a page describing some of my Tcl contributions.
My reason for editing this page just now is to begin a page discussing Tcl Based Installers which is something I keep harping on about to the point that I've now decided to write code...