Last week I was watching this presentation: Does my bus looks big in this?. Although it was recorded two years ago at QCon, it’s still completely true today. In this presentation ThoughtWorks' Chief Scientist Martin Fowler and Global Head of Architecture Jim Webber share their views of the typical corporate ESB, which in their view has grown too fat for its own good. Martin and Jim suggest the Web's architecture as a possible and more light-weight alternative, in line with their preference for agile approaches.
Not only the content is great but also the way how they present it makes this is a really valuable presentation. Check it out.