While researching on Azure design resources for designing enterprise cloud systems, I came across the following video series published on Channel 9 by Windows Azure CAT team.
FailSafe: Building Scalable, Resilient Cloud Services
Great effort by Mark Simms (@mabsimms), UlrichH, and marcmercuri (@marcmercuri).
I also found couple of other sessions delivered by Mark and others on designing and building scalable cloud applications.