Patterns for Generation, Handling and Management of Errors by Andy Longshaw and Eoin Woods [http://www.blueskyline.com/ErrorPatterns/A2-LongshawWoods6.pdf PDF]

• Keep Exceptions Exceptional
• Hide Technical Details from Users
• Big Outer Try Block
• Split Domain and Technical Errors
• Log Unexpected Errors
• Log at Distribution Boundaries
• Unique Error Identifier

Error Handling for Business Information Systems -- A Pattern Language by Klaus Renzel [http://www.eso.org/~almamgr/AlmaAcs/Releases/ACS_4_1/Docs/ARCUSErrorHandling.pdf PDF]