It seems like September through November is heavy on developer and security webcasts. I’m including as many as I can in this entry, if anyone notices others feel free to post them in the comments below.

24 Hours of PASS – 24 one-hour long-ish webcasts from industry experts on SQL related management and development.
geekSpeak: Generics and Collections (Level 200) – Webcast providing details and best practices with collections and lists in .Net Framework 3.5
Windows 7 and Windows Server 2008 R2: Testing your applications for compatibility – the title says it all.
The New Efficiency: IT Professional and Developer Technical Briefings – Phoenix, AZ – This is an in-person event involving Windows 7, Windows server 2008 R2, and Exchange Server 2010
SharePoint 2010 Live Conference and Expo – A live virtual conference regarding all things SharePoint.

Enjoy!