Craig Larman - Collaboration over Contracts

Very good speaker and especially interesting if you're in the outsourcing business, no matter what end of the "stick": http://www.infoq.com/presentations/Collaboration-Over-Contracts

Greg Young - Simple is better

http://skillsmatter.com/podcast/design-architecture/simple-is-better

DDD talks

A really good series of talks, from DDD eXchange 2011.

Udi Dahan: http://skillsmatter.com/podcast/home/talk-from-udi-dahan/cs-2041
Greg Young: http://skillsmatter.com/podcast/home/talk-from-greg-young
Eric Evans: http://skillsmatter.com/podcast/home/talk-from-eric-evans

Dan North, QCon 2011

http://www.infoq.com/presentations/From-Months-to-Minutes

The Rule of Holes

"When you are in one, stop digging"

Facebook Messages Architecture

https://www.facebook.com/notes/facebook-engineering/scaling-the-messages-application-back-end/10150148835363920#

CQRS explained

A good (although older) post, which explains CQRS nicely: http://www.udidahan.com/2009/12/09/clarified-cqrs/  Try to think outside the "layered box" in order to understand CQRS.