Just bought your Perl/Tk book. It is well written and very useful. I am well-versed in writing batch perl scripts but I never did any GUI programming. Within 2-weeks of reading your Perl/Tk book I was able to begin adding a GUI interface to the scripts. Perl/Tk is going to get very big (usage-wise). At this point I am looking for more information. Just as you have many varities of Perl books, more Perl/Tk books are need; some to re-teach the basic concepts from different viewpoints and some for additional material. Now that there is "real" textbook for Perl/Tk the fun and wonder of it will be found very quickly.