that's one of the coolest things about sitefinity! most of the controls are just .net controls that can be added to any level, at the page, control or even master page (even at run time if you needed to)...
just make sure you register the control on your page, for breadcrumb, add this to your master page:
@ Register TagPrefix="sfweb" Namespace="Telerik.Cms.Web.UI" Assembly="Telerik.Cms.Web.UI" %>
then you can add the control directly to the page:
sfweb:Breadcrumb ID="bCrumb" runat="server" PathSeparator=" ¯ " onitemcreated="bCrumb_ItemCreated" />
notice I have an event handler, which lets me further refine the control based on my needs.
not too shabby :)