I do all of these things:

• program in perl, C, C++, ruby, javascript, assembly, and java.
• use opengl/webgl to make stupid pointless stuff
• write raytracers (see avatar)
• wade through rails code
• read chinese
• play metal guitar
• write boring mini-biographies that nobody will read, just to get a badge.

How well I do any of these things is up for debate.