First, sorry for my laziness — I have not posted good/useful posts for a long time. I did not do nothing, but the results were made public under my true name rather than here. Sorry.
This is another rant.
I use C and Perl and see them as the best combination, which has unfortunately prevented me from systematically learning other programming languages, although I wished to. I know some Java and Python, because so many are using them; I also know a bit D, Scheme and Tcl. Nevertheless, I have never written a serious program in them.