I have posted my presentation and demo code from the SQL Server 2005 Service Broker talk I gave at the Heartland Developers Conference 2004 in Des Moines, Iowa on December 3. You can get them from these links:
HDC2004_SQLServer2005ServiceBroker.pdf
HDC2004_SQLServer2005ServiceBroker.zip
I posted more information about the conference on my other blog.