OfficeZealot has released Podcast #7 in which Chris Kunicki talks with SharePoint MVP Jan Tielens.
John Durant summarizes nicely:
1) A very brief intro to SharePoint
2) Description of what you need to get started with SharePoint development generally
3) Discussion of WebParts and the GAC; deployment issues
4) SmartParts
5) Security
6) Workflow
7) Community resources
8) The value of SharePoint Portal Server