There is a Cloud Computing & Big Data event/conference going on in Amsterdam. They have invited many speakers from Amazon, Facebook, Salesforce, etc. including mostly CTO, VP, CEO, Scientists.
Looking at their schedule, there are several interesting panel talks / speaker sessions related to our class discussions such as: "Debate: Hadoop vs. The World", Facebook's "Data Center Strategies", "Infrastructure Challenges with Big Data", etc. Check out the schedule link for more detailed descriptions of these topics.
The event lasts only for two days, Oct 16 and 17 and there is free live stream on their website. Being in Europe, the time can be quite inconvenient, but recorded videos are available immediately.