Parvez Ansari writes regularly on his blog http://www.wpfblogger.com. On WPFBlogger Free resourses he posts the projects he discusses on his blog.
Nov 11
The first project posted is the BreadCrumb style TabControl and TabItem
Dec 02
Sliding ToggleButton style has been designed to give cool sliding effect to the Togglebutton. You simply need to apply the style to the ToggleButton used in your project.