I watched the "Optimizing Play for Production" webinar yesterday and was hugely impressed and encouraged by what Play is capable of. I would recommend this presentation to anyone building web applications with the Play Framework or just curious as to why Play is such an awesome framework to use.
Typesafe are really embracing the community by offering free courses through Coursera and free live webinars like the one mentioned above. A great way for someone like me to learn from the experts.