I work on the Entity Framework Team at Microsoft.
I don’t post much on my blog lately (too busy working on Entity Framework for .NET 4!), but this post from my teammate Rowan struck me as something that would help lots of customers, so I wanted to link to it. It explains basically everything you need to know about events available in the Object Services API of Entity Framework.
While I am here, the tips series in my other teammate Alex James’ blog probably don’t need much publicity from me, but they are an awesome resource for customers.
Update 8.11.2010: Broken link to Rowan’s blog.