Generally known as citizen428 online.
Main programming language:
Ruby. Also a mentor at RubyLearning.org since early 2009.
Some other favorites:
Haskell, Clojure, Common Lisp, Lua, Scala
Also playing around with:
J, Smalltalk, Scheme, Erlang, Factor, R, 6502 assembler, Python, Forth, Potion and everything else I can get my hands on.
Contributed bug fixes to:
JRuby (x2), Potion
Languages I should pick up again at some point:
C, C++
Languages I'm glad I don't have to touch anymore:
Cobol, PL/I
Stack Overflow
Q&A for professional and enthusiast programmers
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Server Fault
Q&A for professional system and network administrators
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Mathematics
Q&A for people studying math at any level and professionals in related fields