nscerqueira are the initials of: Nuno Sousa Cerqueira
I've used tcl/tk for quite a while and now I am quite addicted to it. I generally develop tcl/tk GUIs for theoretical and computational chemistry.
Lately I have been using it together with VMD (Visual molecular dynamics) that uses tcl as the main scripting language.
Have a look at some scripts that I have develop:
Applications
Virtual screening woth VMD and Autodock : http://www.fc.up.pt/pessoas/nscerque/vsLab/vLab/HomePage.html
MADAMM - Flexible docking software :http://www.fc.up.pt/pessoas/nscerque/MADAMM.html
wiki pages
tcl/sqlite examples : tcl sqlite examples