Thanks Microsoft… for two things
1. Making a new AutoCompleteBox for WPF included in the February 2010 relase of WPF Toolkit: http://www.codeplex.com/wpf
2. Not letting any devs know that this was in the pipeline, since half of the internet’s WPF developers went on ahead and recreated their own imperfect (read: basterdized) versions of the AutoComplete Control
All joking aside. This is exciting and i’m very happy!