I am looking forward to Unity v1.2, which will include Aspect-Oriented Programming ( AOP ) Features ported from the Enterprise Library Policy Injection Application Block.
For those of you familiar with the Policy Injection Application Block and its use of Remoting Proxies, you will easily get up to speed on the new Unity v1.2 Interception Extension and RemotingPolicyInjector that provide similar functionality in Unity. In fact, the new Microsoft.Practices.Unity.Inteception Assembly is mostly a transfer of the PIAB Core Code to Unity.
To demonstrate the new RemotingPolicyInjector and Interception Extension, I created a screencast:
Although Unity v1.2 is in the early drops and subject to change, hopefully the screencast will help you understand the possibilities.
Check out other Patterns & Practices Screencasts.