Object design

.NET	7
Artificial Intelligence	7
Group behavior	2
Path finding	13
A* and its derivatives	6
Pattern recognition	1
Steering behavior	2
World interaction	4
Audio	0
DirectX	8
DSP	5
Ogg Vorbis	2
OpenAL	1
Windows	1
Computer Science	2
Algorithms & data structures	9
BSP trees	8
Encryption	12
Randomness & noise	11
Data storage	4
File formats	14
Image	10
Resource files	2
Game Development	19
Cheat & crack prevention	10
Input	3
Timing	4
Graphics	25
Character animation	6
DirectX	24
Optimizing	8
Illumination	5
Deferred lighting	7
Global illumination	8
Lighting models	6
Screen Space Ambient Occlusion	4
Shadow maps	18
Shadow volumes	15
Image processing & synthesizing	19
Non-polygonal rendering	3
Ray tracing	3
OpenGL	12
Particle systems	7
Shaders	30
Simulation	4
Cloth	2
Clouds & sky light	7
Fire & smoke	4
Liquids	12
Surfaces & Meshes	7
Implicit surfaces	6
Parametric curves & surfaces	7
Polygon reduction & LOD	3
Subdivision surfaces	7
Terrain	7
Continuous LOD	12
Generating data	4
Voxel engines	2
Text	6
Transparency	1
Visibility determination	16
Languages	4
Assembler	20
C & C++	25
C++ exceptions	5
Calling conventions	10
Debugging	5
Memory management	7
Optimizations	6
C#	4
Creating your own language	13
Garbage collection	7
D	2
Java	4
Scripting	2
JScript & VBScript	1
Lua	6
Other languages	8
Perl	2
Python	5
Ruby	4
Mathematics	3
Fourier transform	4
Geometry	5
Linear algebra, vectors & matrices	9
Wavelet transform	5
Object design	2
Physics	5
Body dynamics	8
Collision detection	9
Polytopes	6
Platform	2
Linux	1
Mac	2
Windows	12
COM, ATL & WTL	7
Dynamically loaded libraries	6
Hooks	5
Input	2
Networking	5
Screensavers	3
Services	1
Shell	2
Small executables	3
Windows	8
Web Technologies	6

UML.org
Official home page for the Unified Modeling Language.

Practical UML: A Hands-On Introduction for Developers
Dec, 2003 - Randy Miller
A very good tutorial on UML.