Via James Tauber via Dougal Matthews and also Steven Lott.

• Logo
• C
• Tcl/Tk
• VB6
• Java
• C++
• Python
• Javascript
• Scheme
• MIPS Assembly
• Perl
• Erlang
• ActionScript

I’ve dabbled in a bunch more, like Ruby, but these are all of the ones that I’ve done one or more projects with. This is fun–everyone should post their list!