My company sites...
Web performance optimization.
Royalty-free Silverlight controls and XAML illustrations submitted by developers and designers.
Powerful and easy to use .NET regex tester built in Silverlight.
My personal sites...
My personal blog (mostly programming stuff).
My OpenGL site. Most of the programs and tutorials are outdated by today's standards, but I suppose it could still be useful to someone.
Calculate how fast your car will reach 60 mph from a standstill.
Q&A for professional and enthusiast programmers
Q&A for user experience researchers and experts
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Q&A for professional system and network administrators
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for professional and amateur chefs
Q&A for Information security professionals
Q&A for professional programmers interested in conceptual questions about software development
Q&A for Tridion developers and administrators
Q&A for computer enthusiasts and power users