The last few issues of MSDN Magazine have had a number of excellent articles that in my view are must reads for all .NET developers

• .NET 2.0 CAS - software engineers never know enough about security
• SUPERASSERT - When John writes, everyone should read
• Impact of Low-Lock Techniques - Did you know that .NET 2.0 has a different memory model to the ECMA memory model?
• Reliability Features - CLR hosting, ICLRPolicyManager, Safe Handles...
• Performance Pitfalls - always worth a re-read, especially when Joel admits Microsoft made a bad design decision.
• SpinWaitLock - Jeffrey on concurrency.
• OpenMP - C++ land.  Also worth viewing the PDC C++: Future Directions in Language Innovation presentation.
• Transaction on your class variables - very cool

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