The first presentation I attended was an excellent presentation about building distributed systems given by Udi Dahan. He talked a little about his open source enterprise service bus (ESB) nServiceBus. He had a boatload of material, and ran through it all - it was a little bit too much for the time, and yet he managed to do a good job of not crushing us with it all.

Some of the more interesting notes I took:

If you have the opportunity to see Udi speak, I highly recommend it. I'm hoping to get a chance to play around with nServiceBus - maybe I'll have somethign to write about that in the coming weeks.