To keep the ball rolling, LinFu.AOP2 will support the following styles of method interception:
Donut Interception - This means that when a method is intercepted, its original implementation (a.k.a. its method body) will be left intact, but LinFu.AOP2 will inject additional behavior around the original method body--hence, the donut moniker. This can be useful if you want to inspect the input and the output of a given method without altering its implementation.
Donut Hole Interception - This means that when a method is intercepted, its original implementation is completely discarded and replaced with a different implementation altogether.
To make this interesting, LinFu.AOP allows both styles of interception to overlap each other, all at runtime. That means you can inject code 'around' a method body, and you can even replace that method body with something else altogether. Needless to say, this new framework offers a staggering amount of power not readily available in any .NET language today, and the possibilities with it are truly limitless.
(Meanwhile, all this talk of donuts is making me hungry, so I'm off to breakfast...)