If you are free tomorrow (Monday, January 15th) from 6-9pm make sure to come check out Miguel Castro at the Stanley Milner Library. He will be talking about designing applications for extensibility. As always there is also the chance to talk and network with your .NET developer peers before and after the event.
You can get a sneak preview of the kinds of things he will be talking about from his appearance on the Polymorphic Podcast. Also if you would like to study his code and presentation material before the presentation so that you understand it better you can view it at SteelBlue Solutions under the Downloads->Presentations link.