The other name of this article by Eric Sink is "WPF for Laggards": http://software.ericsink.com/entries/WPF_for_Laggards.html

So the top ten things from Eric's perspective are:

1.  It's part of WinFX (OK, Eric just lagged in his very first point because it's actually a part of .NET Framework 3.0 :)))
2.  XAML is like HTML.
3.  There is no HWND.
4.  The "Cider" isn't ready yet.
5.  XAML Cruncher is Neato.
6.  Chris Sells' book is good.
7.  You can use Windows XP.
8.  But you have to use IE.
9.  Rod Paddock is right.
10.  There is no Windows Telephony Foundation.

Of course, there is more to read in the actual blog post. For example, in the last point Eric is sad about the fact that in the pack of W*F acronyms there is no WTF :)) (e.g. for Windows Telephony Foundation)