Which .NET Dependency Injection frameworks are worth looking into?

Which C#/.NET Dependency Injection frameworks are worth looking into? And what can you say about their complexity and speed.

Static methods: are they still bad considering PHP 5.3 late static binding?

If you search on the reasons why static methods are bad the first thing you find it is because you can't override it when you are unit testing.

Google Guice vs. PicoContainer for Dependency Injection

My team is researching dependency injection frameworks and is trying to decide between using Google-Guice and PicoContainer.