An Embarrassment of WPF Riches

I just realized that Avalon is getting a book treatment unlike any other topic in my memory:

• "Essential WPF," by Chris Anderson, architect on the MS WPF team
• "Applications = Code + Markup," by *the* Charles Petzold
• "WPF Unleashed," by Adam Nathan of ".NET and COM: The Complete Interoperability Guide," *the* book on .NET interop and the correspondingly wonderful pinvoke.net.
• "Programming WPF," by Ian Griffiths and Chris Sells. Ian's depth of knowledge of graphics -- down to the hardware -- continues to amaze me.

User and GDI had Petzold. Win32 had Rector. MFC had Prosise. COM had Box. Indigo's got no big names I've yet seen, but Avalon gets Anderson, Petzold, Nathan *and* Griffiths?!? It's going to be a bloodbath in the market, but the readers are going to benefit. Why couldn't I have picked a lightweight topic, like, oh, I don't know, ASP.NET 2.0? : )