Currently: working with C#, WPF, ASP.Net, sometimes C++
Past: looked a few pages deep into the C/C++ standard; went crazy; end of story.
A legal note regarding code snippets in my questions and answers:
(*) production usage: This includes anything published as a release candidate, a release, handing in the solution to an assignment (Thats right, dear students out there. Your are not allowed to copy and paste my snippets into your homework solution without understanding them) or any other form that that exceeds development or retired state (if a project is canceled, you don't have to erase my snippets just because it is not in development state anymore).