Dustin has wrapped up his excellent Twelve Days of Refactor X-Mas series highlighting refactorings that work with advanced language features in Visual Studio 2008 right now. One of the things I really like with this series is that Dustin takes the time to explain the new language features, and he does so with clarity.

Links to each article:

Day 1: Make Implicit
Day 2: Make Explicit
Day 3: Name Anonymous Type
Day 4: Rename in Query Expressions
Day 5: Convert to Auto-implemented Property
Day 6: Compress to Lambda Expression
Day 7: Create Backing Store
Day 8: Bread-and-Butter Refactorings in Query Expressions
Day 9: Expand Lambda Expression
Day 10: Refactoring in XML Literals
Day 11: More Refactoring in XML Literals
Day 12: Extract XML Literal to Resource