Well I'm just me really.
I dabble in various languages:
Mainly: C#, C++ .Net, Ruby and Ruby on Rails although in the past I've done a lot of work in VB6 and some in C.
Stack Overflow
Q&A for professional and enthusiast programmers
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Photography
Q&A for professional, enthusiast and amateur photographers
Mathematics
Q&A for people studying math at any level and professionals in related fields
Ask Different
Q&A for power users of Apple hardware and software
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Physics
Q&A for active researchers, academics and students of physics
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
WordPress Answers
Q&A for WordPress developers and administrators
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Personal Finance & Money
Q&A for people who want to be financially literate
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Personal Productivity
Q&A for people wanting to improve their personal productivity