Interested in Game Programming and general Computer Science and Mathematics, In particular:

Computer Graphics (OpenGL/DirectX),
Artificial Intelligence,
Game Engine Development,
Physics Simulations,
Computational Geometry,
Procedural Sound and Texture/Image/Fractal Generation,
Formal Verification (Proving Algorithms),
Compilation Theory,
Fluid Dynamics Simulation,
Computer Networking (TCP/IP, Socket),
Cryptography,
Ordinary and Partial Differential Equations,
General Programming (especially in C/C++),
And more...

Trying to take a good grasp of as much Mathematics and Computer Science as possible.