Generic Work Process is an immense online overview of methods for user centered design (with a slightly unfortunate, non-descriptive name), created by students and researchers of the Rotterdam University of Applied Sciences. The methods are conveniently categorized by product development phase:

• Research & Analysis
• Concept
• Design
• Develop
• Implement

The Design Methodology Project at KAIST resulted in a similar wiki-like overview, of which also a poster (pdf) was made. With regard to posters of the user-centered design process, I'm still a fan of the UPA's board game version (order here), and the Namahn underground map of user-centered design of digital products.

See also
> Usability methods table: choose the appropriate approach
> When to use which user experience research methods (Jakob Nielsen)

[Generic Work Processes found via: usabilityblog]