Most significant hobby project - Ares, an exe patch for Command&Conquer: Yuri's Revenge. A friend and I reverse engineered a large part of the game, mapped the ingame classes into C++, and he wrote a fancy DLL injector. Now plain C++ DLLs get loaded into the game and attached in arbitrary places to fix bugs or add features. See http://modenc.renegadeprojects.com/Portal:Ares and links from there.
Low level developer - x86 asm, C, C++.
Application developer - Delphi, C#.
Web developer - PHP/Perl, HTML, CSS, JS.
Want to contact me? dcoder1337 at gmail dot com , or root at dc0d3r dot name