Tech-turtle, fond of C# and .NET but likes to venture out to forage elsewhere as well.
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Stack Overflow
Q&A for professional and enthusiast programmers
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Code Review
Q&A for peer programmer code reviews
Seasoned Advice
Q&A for professional and amateur chefs
Literature
Q&A for scholars and enthusiasts of literature
Sports
Q&A for participants in team and individual sport activities
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
The Workplace
Q&A for members of the workforce navigating the professional setting
Area 51
Q&A for proposing new sites in the Stack Exchange network
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Software Recommendations
Q&A for people seeking specific software recommendations
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Music Fans
Q&A for music historians, critics, and fans
Server Fault
Q&A for system and network administrators
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Beer, Wine & Spirits
Q&A for alcoholic beverage aficionados and those interested in beer, wine, or spirits
WordPress Development
Q&A for WordPress developers and administrators
Information Security
Q&A for information security professionals
Network Engineering
Q&A for network engineers
Super User
Q&A for computer enthusiasts and power users
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Web Applications
Q&A for power users of web applications
Arqade
Q&A for passionate videogamers on all platforms
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API