The wiser ones thought it was a good lecture. My peers were able to learn something new. The younger ones asked questions - which is a very good thing, a good sign of learning. And the new graduates - no questions asked. Structural dynamics really is a graduate course although it really helps to learn the basics even before applying earthquake or wind loading and understanding their effects on a structure.
Announcement: I noticed many links in the earlier posts below are not working anymore. I hope to update them in the very near future.