I can ramble on about whatever is on my mind, but I prefer to talk about things that people are actually interested in.  Any suggestions?  I'd prefer to stick to stuff I actually work on -- e.g., interop with WinForms and Win32/hwnds, input, commanding, threading & queuing, dependency properties and routed events, styling and templating, parsing and serialization, xaml format, resources, Avalon and USER/GDI -- but if there's enough interest on something else, I can try to accommodate.