Making a prototype UI for PixelSpread, I started implementing the Zoom feature (it zooms the entire page/spread). I wrote two lines of code manipulating the Transform of the container and binding it to a slider, and replaced over 120 lines of Windows Forms related code! No more handling resize events or anything! This just WORKS.
I wish I could post the code. But this is a commercial application. Still, WPF ROCKS! I might post a similar sample just to show off this feature. Seriously, WPF solves SOOOOOOOOO many UI customization problems!