I have seen a lot of Carousels to show off WPF. I have never really need one before now though.
Is there a decent free one?
I have access to the Dev Express one, but I am making an open source project and would rather not put code in it that others cannot easily compile.
After some searching, I (re)found the free and fabulous FluidKit (http://fluidkit.codeplex.com/)
It has many controls that are great. One of them is the ElementFlow. This control has many great views methods. One of them is the Carousel view.
(Just as a side note, after looking at them all I think I like the VForm and CoverFlow views best. They are kind of a carousel like view, but can handle a lot of items with out needing resizing.)