Physicist by training, now a programmer by choice. My languages of preference are Java and C, although I am also skilled in C# and many assembly languages, and competent in Perl, general shell scripting, and a handful of other languages I use less often. I can speak basic SQL. I write my HTML by hand and prefer table-free page layout.
NOTE: I never do retaliatory downvotes or anything petty like that. I am here to learn as well as to teach. If something I write is worthy of a downvote, please leave a comment to let me know why. If I am incorrect, I want to know!
I use Linux by preference, but also develop extensively under Windows. I've developed under various embedded and custom OS's and RTOS's (primarily Microware OS-9 and VxWorks), assorted UNIXes, VAX/VMS, and assorted Windows releases. I've played with RSTS/E and a few other operating systems that are unknown today.
My home website is pretty sparse, but will some day be populated. Really.
Q&A for professional and enthusiast programmers
Q&A for system and network administrators
Q&A for computer enthusiasts and power users
Q&A for professional programmers interested in conceptual questions about software development
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for parents, grandparents, nannies and others with a parenting role
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Q&A for information security professionals
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization