I did a presentation on Indigo to the VBUG London group last night.  The turn out was pretty good, although it was obvious that many English football fans were missing (though they probably would have enjoyed the User Group more than the humiliating defeat).

Off the top of my head, here are the things that keep standing out for me about Indigo:

• The power of separating choices about the binding from the code that a developer writes.  Being able to switch from the tcp with a binary encoding, to reliable messaging over HTTP, to MSMQ just by changing the configuration file is great.
• The simplicity of the programming model.  The majority of the functionality that required Enterprise Services, such as Instancing and Sessions, are available using attributes on either an interface/class or a method such as ServiceBehavior or OperationBehavior.
• The fact that the details of the protocols are hidden under the covers.  Instead of focussing on the WS-* protocols, the focus is on the functionality required.  This has taken me a while to get my head around after having used WSE, which is powerful, but involved having to understand a lot of the details of the underlying protocols.

I'm looking forwad to some of the Level 400 sessions at the PDC, such as Kenny Woolf's presentation on Channels.

As Mehran noticed, I couldn't help but show off the Refactor! tool that's shipping for free in Visual Basic 2005.  This was in response to an attendee who believed that Visual Studio was 'a multi-megabyte bloated version of notepad'.