http://www.myriadtech.com.au/blog/James/Lists/Posts/Post.aspx?ID=5
"The Content Type Toolbar is a simple add-on that will enhance the use of SharePoint Content Types in large deployments.
(It) will automatically inspect the content types that have been configured on a library or list. The content type toolbar will create a toolbar that displays the content types as large buttons that will enable the users to choose a content type with the click of a button."