Learn PLINQ and Rx

I am learning some new features in .NET 4.0 -- PLINQ and Reactive Extensions these days. The following links are used in my reading. As I keep learning, I would add more links as long as I consider the article is useful.

PLINQ:

• http://msdn.microsoft.com/en-us/magazine/cc163329.aspx
• http://msdn.microsoft.com/en-us/magazine/cc872852.aspx
• http://blogs.msdn.com/pfxteam/archive/2008/06/11/8592301.aspx
  

Rx:

• http://rxwiki.wikidot.com/