Not really a Tcl programmer, just someone who posted a page at http://www.kudla.org/raindog/tcl/ a few years ago to express the one good use (self-contained, stand-alone, high-level cross-platform GUI apps) I'd found for Tcl, for which I otherwise don't care much at all.
I tend to be more into Gambas [L1 ] and PerlQt [L2 ] as high level Linux-compatible GUI languages/toolkits go.